killbill-aplcache

cache: switch away from CacheLoader pattern In Ehcache 3,

3/17/2017 9:35:20 AM

Changes

Details

diff --git a/account/src/main/java/org/killbill/billing/account/api/svcs/DefaultAccountInternalApi.java b/account/src/main/java/org/killbill/billing/account/api/svcs/DefaultAccountInternalApi.java
index c9cc74a..4f7b285 100644
--- a/account/src/main/java/org/killbill/billing/account/api/svcs/DefaultAccountInternalApi.java
+++ b/account/src/main/java/org/killbill/billing/account/api/svcs/DefaultAccountInternalApi.java
@@ -1,7 +1,7 @@
 /*
  * Copyright 2010-2013 Ning, Inc.
- * Copyright 2014-2016 Groupon, Inc
- * Copyright 2014-2016 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -160,8 +160,8 @@ public class DefaultAccountInternalApi extends DefaultAccountApiBase implements 
     private CacheLoaderArgument createBCDCacheLoaderArgument(final InternalTenantContext context) {
         final AccountBCDCacheLoader.LoaderCallback loaderCallback = new AccountBCDCacheLoader.LoaderCallback() {
             @Override
-            public Object loadAccountBCD(final UUID accountId, final InternalTenantContext context) {
-                Object result = accountDao.getAccountBCD(accountId, context);
+            public Integer loadAccountBCD(final UUID accountId, final InternalTenantContext context) {
+                Integer result = accountDao.getAccountBCD(accountId, context);
                 if (result != null) {
                     // If the value is 0, then account BCD was not set so we don't want to create a cache entry
                     result = result.equals(DefaultMutableAccountData.DEFAULT_BILLING_CYCLE_DAY_LOCAL) ? null : result;
diff --git a/account/src/main/java/org/killbill/billing/account/api/svcs/DefaultImmutableAccountInternalApi.java b/account/src/main/java/org/killbill/billing/account/api/svcs/DefaultImmutableAccountInternalApi.java
index 250d47a..295a35a 100644
--- a/account/src/main/java/org/killbill/billing/account/api/svcs/DefaultImmutableAccountInternalApi.java
+++ b/account/src/main/java/org/killbill/billing/account/api/svcs/DefaultImmutableAccountInternalApi.java
@@ -1,6 +1,6 @@
 /*
- * Copyright 2016 Groupon, Inc
- * Copyright 2016 The Billing Project, LLC
+ * Copyright 2016-2017 Groupon, Inc
+ * Copyright 2016-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -78,7 +78,7 @@ public class DefaultImmutableAccountInternalApi implements ImmutableAccountInter
     private CacheLoaderArgument createImmutableAccountCacheLoaderArgument(final InternalTenantContext context) {
         final LoaderCallback loaderCallback = new LoaderCallback() {
             @Override
-            public Object loadAccount(final Long recordId, final InternalTenantContext context) {
+            public ImmutableAccountData loadAccount(final Long recordId, final InternalTenantContext context) {
                 final Account account = getAccountByRecordIdInternal(recordId, context);
                 return account != null ? new DefaultImmutableAccountData(account) : null;
             }
diff --git a/catalog/src/main/java/org/killbill/billing/catalog/caching/EhCacheCatalogCache.java b/catalog/src/main/java/org/killbill/billing/catalog/caching/EhCacheCatalogCache.java
index ee21422..66986ea 100644
--- a/catalog/src/main/java/org/killbill/billing/catalog/caching/EhCacheCatalogCache.java
+++ b/catalog/src/main/java/org/killbill/billing/catalog/caching/EhCacheCatalogCache.java
@@ -1,6 +1,6 @@
 /*
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -27,6 +27,7 @@ import org.killbill.billing.callcontext.InternalTenantContext;
 import org.killbill.billing.catalog.StandaloneCatalog;
 import org.killbill.billing.catalog.StandaloneCatalogWithPriceOverride;
 import org.killbill.billing.catalog.VersionedCatalog;
+import org.killbill.billing.catalog.api.Catalog;
 import org.killbill.billing.catalog.api.CatalogApiException;
 import org.killbill.billing.catalog.io.VersionedCatalogLoader;
 import org.killbill.billing.catalog.override.PriceOverride;
@@ -113,7 +114,7 @@ public class EhCacheCatalogCache implements CatalogCache {
                     final StandaloneCatalogWithPriceOverride curWithOverride = new StandaloneCatalogWithPriceOverride(cur, priceOverride, tenantContext.getTenantRecordId(), internalCallContextFactory);
                     tenantCatalog.add(curWithOverride);
                 }
-                cacheController.add(tenantContext.getTenantRecordId(), tenantCatalog);
+                cacheController.putIfAbsent(tenantContext.getTenantRecordId(), tenantCatalog);
             }
             return tenantCatalog;
         } catch (final IllegalStateException e) {
@@ -150,7 +151,7 @@ public class EhCacheCatalogCache implements CatalogCache {
     private CacheLoaderArgument initializeCacheLoaderArgument(final boolean filterTemplateCatalog) {
         final LoaderCallback loaderCallback = new LoaderCallback() {
             @Override
-            public Object loadCatalog(final List<String> catalogXMLs, final Long tenantRecordId) throws CatalogApiException {
+            public Catalog loadCatalog(final List<String> catalogXMLs, final Long tenantRecordId) throws CatalogApiException {
                 return loader.load(catalogXMLs, filterTemplateCatalog, tenantRecordId);
             }
         };
diff --git a/catalog/src/main/java/org/killbill/billing/catalog/caching/EhCacheOverriddenPlanCache.java b/catalog/src/main/java/org/killbill/billing/catalog/caching/EhCacheOverriddenPlanCache.java
index f0b3f7c..bb3b7e3 100644
--- a/catalog/src/main/java/org/killbill/billing/catalog/caching/EhCacheOverriddenPlanCache.java
+++ b/catalog/src/main/java/org/killbill/billing/catalog/caching/EhCacheOverriddenPlanCache.java
@@ -1,6 +1,6 @@
 /*
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -58,7 +58,7 @@ public class EhCacheOverriddenPlanCache implements OverriddenPlanCache {
         this.cacheController = cacheControllerDispatcher.getCacheController(CacheType.OVERRIDDEN_PLAN);
         this.loaderCallback = new LoaderCallback() {
             @Override
-            public Object loadPlan(final String planName, final StaticCatalog catalog, final InternalTenantContext context) throws CatalogApiException {
+            public Plan loadPlan(final String planName, final StaticCatalog catalog, final InternalTenantContext context) throws CatalogApiException {
                 return loadOverriddenPlan(planName, catalog, context);
             }
         };
diff --git a/overdue/src/main/java/org/killbill/billing/overdue/caching/EhCacheOverdueConfigCache.java b/overdue/src/main/java/org/killbill/billing/overdue/caching/EhCacheOverdueConfigCache.java
index 7285e87..f36b9e5 100644
--- a/overdue/src/main/java/org/killbill/billing/overdue/caching/EhCacheOverdueConfigCache.java
+++ b/overdue/src/main/java/org/killbill/billing/overdue/caching/EhCacheOverdueConfigCache.java
@@ -114,7 +114,7 @@ public class EhCacheOverdueConfigCache implements OverdueConfigCache {
     private CacheLoaderArgument initializeCacheLoaderArgument() {
         final LoaderCallback loaderCallback = new LoaderCallback() {
             @Override
-            public Object loadOverdueConfig(final String overdueConfigXML) throws OverdueApiException {
+            public OverdueConfig loadOverdueConfig(final String overdueConfigXML) throws OverdueApiException {
                 final InputStream overdueConfigStream = new ByteArrayInputStream(overdueConfigXML.getBytes());
                 final URI uri;
                 try {
diff --git a/payment/src/main/java/org/killbill/billing/payment/caching/EhCacheStateMachineConfigCache.java b/payment/src/main/java/org/killbill/billing/payment/caching/EhCacheStateMachineConfigCache.java
index ae76cb2..5fc9511 100644
--- a/payment/src/main/java/org/killbill/billing/payment/caching/EhCacheStateMachineConfigCache.java
+++ b/payment/src/main/java/org/killbill/billing/payment/caching/EhCacheStateMachineConfigCache.java
@@ -105,7 +105,7 @@ public class EhCacheStateMachineConfigCache implements StateMachineConfigCache {
             // It means we are using the default state machine config in a multi-tenant deployment
             if (pluginPaymentStateMachineConfig == null) {
                 pluginPaymentStateMachineConfig = defaultPaymentStateMachineConfig;
-                cacheController.add(pluginConfigKey, pluginPaymentStateMachineConfig);
+                cacheController.putIfAbsent(pluginConfigKey, pluginPaymentStateMachineConfig);
             }
             return pluginPaymentStateMachineConfig;
         } catch (final IllegalStateException e) {
diff --git a/util/src/main/java/org/killbill/billing/util/cache/AccountBCDCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/AccountBCDCacheLoader.java
index d88ea69..6e9955d 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/AccountBCDCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/AccountBCDCacheLoader.java
@@ -1,6 +1,6 @@
 /*
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -22,7 +22,7 @@ import java.util.UUID;
 import org.killbill.billing.callcontext.InternalTenantContext;
 import org.killbill.billing.util.cache.Cachable.CacheType;
 
-public class AccountBCDCacheLoader extends BaseCacheLoader {
+public class AccountBCDCacheLoader extends BaseCacheLoader<UUID, Integer> {
 
     @Override
     public CacheType getCacheType() {
@@ -30,30 +30,18 @@ public class AccountBCDCacheLoader extends BaseCacheLoader {
     }
 
     @Override
-    public Object load(final Object key, final Object argument) {
-
-        checkCacheLoaderStatus();
-
-        if (!(key instanceof UUID)) {
-            throw new IllegalArgumentException("Unexpected key type of " + key.getClass().getName());
-        }
-
-        if (!(argument instanceof CacheLoaderArgument)) {
-            throw new IllegalArgumentException("Unexpected argument type of " + argument.getClass().getName());
-        }
-
-        final CacheLoaderArgument cacheLoaderArgument = (CacheLoaderArgument) argument;
-
+    public Integer compute(final UUID key, final CacheLoaderArgument cacheLoaderArgument) {
         if (cacheLoaderArgument.getArgs() == null ||
             !(cacheLoaderArgument.getArgs()[0] instanceof LoaderCallback)) {
             throw new IllegalArgumentException("Missing LoaderCallback from the arguments ");
         }
 
         final LoaderCallback callback = (LoaderCallback) cacheLoaderArgument.getArgs()[0];
-        return callback.loadAccountBCD((UUID) key, cacheLoaderArgument.getInternalTenantContext());
+        return callback.loadAccountBCD(key, cacheLoaderArgument.getInternalTenantContext());
     }
 
     public interface LoaderCallback {
-        Object loadAccountBCD(final UUID accountId, final InternalTenantContext context);
+
+        Integer loadAccountBCD(final UUID accountId, final InternalTenantContext context);
     }
 }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/AccountRecordIdCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/AccountRecordIdCacheLoader.java
index 352a2d7..7cb8757 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/AccountRecordIdCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/AccountRecordIdCacheLoader.java
@@ -1,7 +1,7 @@
 /*
  * Copyright 2010-2013 Ning, Inc.
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -28,10 +28,8 @@ import org.killbill.billing.util.cache.Cachable.CacheType;
 import org.killbill.billing.util.dao.NonEntityDao;
 import org.skife.jdbi.v2.Handle;
 
-import net.sf.ehcache.loader.CacheLoader;
-
 @Singleton
-public class AccountRecordIdCacheLoader extends BaseIdCacheLoader implements CacheLoader {
+public class AccountRecordIdCacheLoader extends BaseIdCacheLoader<Long> {
 
     private final NonEntityDao nonEntityDao;
 
@@ -47,7 +45,7 @@ public class AccountRecordIdCacheLoader extends BaseIdCacheLoader implements Cac
     }
 
     @Override
-    protected Object doRetrieveOperation(final String rawKey, final ObjectType objectType, final Handle handle) {
+    protected Long doRetrieveOperation(final String rawKey, final ObjectType objectType, final Handle handle) {
         return nonEntityDao.retrieveAccountRecordIdFromObjectInTransaction(UUID.fromString(rawKey), objectType, null, handle);
     }
 }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/AuditLogCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/AuditLogCacheLoader.java
index bc0761d..ac42ff0 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/AuditLogCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/AuditLogCacheLoader.java
@@ -1,7 +1,9 @@
 /*
- * Copyright 2010-2012 Ning, Inc.
+ * Copyright 2010-2013 Ning, Inc.
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
- * Ning licenses this file to you under the Apache License, version 2.0
+ * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
  * License.  You may obtain a copy of the License at:
  *
@@ -16,25 +18,24 @@
 
 package org.killbill.billing.util.cache;
 
+import java.util.List;
+
 import javax.inject.Inject;
 import javax.inject.Singleton;
 
-import org.skife.jdbi.v2.IDBI;
-
 import org.killbill.billing.callcontext.InternalTenantContext;
+import org.killbill.billing.util.audit.dao.AuditLogModelDao;
 import org.killbill.billing.util.cache.Cachable.CacheType;
 import org.killbill.billing.util.dao.AuditSqlDao;
-import org.killbill.billing.util.dao.NonEntityDao;
-
-import net.sf.ehcache.loader.CacheLoader;
+import org.skife.jdbi.v2.IDBI;
 
 @Singleton
-public class AuditLogCacheLoader extends BaseCacheLoader implements CacheLoader {
+public class AuditLogCacheLoader extends BaseCacheLoader<Object, List<AuditLogModelDao>> {
 
     private final AuditSqlDao auditSqlDao;
 
     @Inject
-    public AuditLogCacheLoader(final IDBI dbi, final NonEntityDao nonEntityDao) {
+    public AuditLogCacheLoader(final IDBI dbi) {
         super();
         this.auditSqlDao = dbi.onDemand(AuditSqlDao.class);
     }
@@ -45,17 +46,8 @@ public class AuditLogCacheLoader extends BaseCacheLoader implements CacheLoader 
     }
 
     @Override
-    public Object load(final Object key, final Object argument) {
-        checkCacheLoaderStatus();
-
-        if (!(key instanceof String)) {
-            throw new IllegalArgumentException("Unexpected key type of " + key.getClass().getName());
-        }
-        if (!(argument instanceof CacheLoaderArgument)) {
-            throw new IllegalArgumentException("Unexpected key type of " + argument.getClass().getName());
-        }
-
-        final Object[] args = ((CacheLoaderArgument) argument).getArgs();
+    public List<AuditLogModelDao> compute(final Object key, final CacheLoaderArgument cacheLoaderArgument) {
+        final Object[] args = cacheLoaderArgument.getArgs();
         final String tableName = (String) args[0];
         final Long targetRecordId = (Long) args[1];
         final InternalTenantContext internalTenantContext = (InternalTenantContext) args[2];
diff --git a/util/src/main/java/org/killbill/billing/util/cache/AuditLogViaHistoryCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/AuditLogViaHistoryCacheLoader.java
index b819148..113779d 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/AuditLogViaHistoryCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/AuditLogViaHistoryCacheLoader.java
@@ -1,7 +1,9 @@
 /*
- * Copyright 2010-2012 Ning, Inc.
+ * Copyright 2010-2013 Ning, Inc.
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
- * Ning licenses this file to you under the Apache License, version 2.0
+ * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
  * License.  You may obtain a copy of the License at:
  *
@@ -16,25 +18,24 @@
 
 package org.killbill.billing.util.cache;
 
+import java.util.List;
+
 import javax.inject.Inject;
 import javax.inject.Singleton;
 
-import org.skife.jdbi.v2.IDBI;
-
 import org.killbill.billing.callcontext.InternalTenantContext;
+import org.killbill.billing.util.audit.dao.AuditLogModelDao;
 import org.killbill.billing.util.cache.Cachable.CacheType;
 import org.killbill.billing.util.dao.AuditSqlDao;
-import org.killbill.billing.util.dao.NonEntityDao;
-
-import net.sf.ehcache.loader.CacheLoader;
+import org.skife.jdbi.v2.IDBI;
 
 @Singleton
-public class AuditLogViaHistoryCacheLoader extends BaseCacheLoader implements CacheLoader {
+public class AuditLogViaHistoryCacheLoader extends BaseCacheLoader<Object, List<AuditLogModelDao>> {
 
     private final AuditSqlDao auditSqlDao;
 
     @Inject
-    public AuditLogViaHistoryCacheLoader(final IDBI dbi, final NonEntityDao nonEntityDao) {
+    public AuditLogViaHistoryCacheLoader(final IDBI dbi) {
         super();
         this.auditSqlDao = dbi.onDemand(AuditSqlDao.class);
     }
@@ -45,17 +46,8 @@ public class AuditLogViaHistoryCacheLoader extends BaseCacheLoader implements Ca
     }
 
     @Override
-    public Object load(final Object key, final Object argument) {
-        checkCacheLoaderStatus();
-
-        if (!(key instanceof String)) {
-            throw new IllegalArgumentException("Unexpected key type of " + key.getClass().getName());
-        }
-        if (!(argument instanceof CacheLoaderArgument)) {
-            throw new IllegalArgumentException("Unexpected key type of " + argument.getClass().getName());
-        }
-
-        final Object[] args = ((CacheLoaderArgument) argument).getArgs();
+    public List<AuditLogModelDao> compute(final Object key, final CacheLoaderArgument cacheLoaderArgument) {
+        final Object[] args = cacheLoaderArgument.getArgs();
         final String tableName = (String) args[0];
         final String historyTableName = (String) args[1];
         final Long targetRecordId = (Long) args[2];
diff --git a/util/src/main/java/org/killbill/billing/util/cache/BaseCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/BaseCacheLoader.java
index c0044c6..973f9f0 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/BaseCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/BaseCacheLoader.java
@@ -1,7 +1,7 @@
 /*
  * Copyright 2010-2013 Ning, Inc.
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -18,77 +18,13 @@
 
 package org.killbill.billing.util.cache;
 
-import java.util.Collection;
-import java.util.Map;
-
-import javax.inject.Inject;
-
 import org.killbill.billing.util.cache.Cachable.CacheType;
 
-import net.sf.ehcache.CacheException;
-import net.sf.ehcache.Ehcache;
-import net.sf.ehcache.Status;
-import net.sf.ehcache.loader.CacheLoader;
-
-public abstract class BaseCacheLoader implements CacheLoader {
+public abstract class BaseCacheLoader<K, V> {
 
     static final String EMPTY_VALUE_PLACEHOLDER = "__#VALEUR!__";
 
-    private Status cacheLoaderStatus;
-
-    @Inject
-    public BaseCacheLoader() {
-        this.cacheLoaderStatus = Status.STATUS_UNINITIALISED;
-    }
-
     public abstract CacheType getCacheType();
 
-    @Override
-    public abstract Object load(final Object key, final Object argument);
-
-    @Override
-    public Object load(final Object key) throws CacheException {
-        throw new IllegalStateException("Method load is not implemented ");
-    }
-
-    @Override
-    public Map loadAll(final Collection keys) {
-        throw new IllegalStateException("Method loadAll is not implemented ");
-    }
-
-    @Override
-    public Map loadAll(final Collection keys, final Object argument) {
-        throw new IllegalStateException("Method loadAll is not implemented ");
-    }
-
-    @Override
-    public String getName() {
-        return this.getClass().getName();
-    }
-
-    @Override
-    public CacheLoader clone(final Ehcache cache) throws CloneNotSupportedException {
-        throw new IllegalStateException("Method clone is not implemented ");
-    }
-
-    @Override
-    public void init() {
-        this.cacheLoaderStatus = Status.STATUS_ALIVE;
-    }
-
-    @Override
-    public void dispose() throws CacheException {
-        cacheLoaderStatus = Status.STATUS_SHUTDOWN;
-    }
-
-    @Override
-    public Status getStatus() {
-        return cacheLoaderStatus;
-    }
-
-    protected void checkCacheLoaderStatus() {
-        if (getStatus() != Status.STATUS_ALIVE) {
-            throw new CacheException("CacheLoader is not available!");
-        }
-    }
+    public abstract V compute(final K key, final CacheLoaderArgument cacheLoaderArgument);
 }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/BaseIdCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/BaseIdCacheLoader.java
index c0329ae..e2cb993 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/BaseIdCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/BaseIdCacheLoader.java
@@ -1,6 +1,6 @@
 /*
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -18,40 +18,28 @@
 package org.killbill.billing.util.cache;
 
 import org.killbill.billing.ObjectType;
-import org.killbill.billing.util.cache.Cachable.CacheType;
 import org.skife.jdbi.v2.Handle;
 
-public abstract class BaseIdCacheLoader extends BaseCacheLoader {
+public abstract class BaseIdCacheLoader<V> extends BaseCacheLoader<String, V> {
 
     protected BaseIdCacheLoader() {
         super();
     }
 
-    @Override
-    public abstract CacheType getCacheType();
-
-    protected abstract Object doRetrieveOperation(final String rawKey, final ObjectType objectType, final Handle handle);
+    protected abstract V doRetrieveOperation(final String rawKey, final ObjectType objectType, final Handle handle);
 
     @Override
-    public Object load(final Object key, final Object argument) {
-        checkCacheLoaderStatus();
-
-        if (!(key instanceof String)) {
-            throw new IllegalArgumentException("Unexpected key type of " + key.getClass().getName());
-        }
-        if (!(argument instanceof CacheLoaderArgument)) {
-            throw new IllegalArgumentException("Unexpected key type of " + argument.getClass().getName());
-        }
-
+    public V compute(final String key, final CacheLoaderArgument cacheLoaderArgument) {
         final String rawKey;
         if (getCacheType().isKeyPrefixedWithTableName()) {
-            final String[] parts = ((String) key).split(CacheControllerDispatcher.CACHE_KEY_SEPARATOR);
+            final String[] parts = key.split(CacheControllerDispatcher.CACHE_KEY_SEPARATOR);
             rawKey = parts[1];
         } else {
-            rawKey = (String) key;
+            rawKey = key;
         }
-        final ObjectType objectType = ((CacheLoaderArgument) argument).getObjectType();
-        final Handle handle = ((CacheLoaderArgument) argument).getHandle();
+
+        final ObjectType objectType = cacheLoaderArgument.getObjectType();
+        final Handle handle = cacheLoaderArgument.getHandle();
         return doRetrieveOperation(rawKey, objectType, handle);
     }
 }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/CacheController.java b/util/src/main/java/org/killbill/billing/util/cache/CacheController.java
index 2c6be1e..b2a9673 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/CacheController.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/CacheController.java
@@ -20,12 +20,8 @@ import org.killbill.billing.util.cache.Cachable.CacheType;
 
 public interface CacheController<K, V> {
 
-    void add(K key, V value);
-
     V get(K key, CacheLoaderArgument objectType);
 
-    V get(K key);
-
     boolean remove(K key);
 
     void putIfAbsent(final K key, V value);
diff --git a/util/src/main/java/org/killbill/billing/util/cache/CacheControllerDispatcherProvider.java b/util/src/main/java/org/killbill/billing/util/cache/CacheControllerDispatcherProvider.java
index f980ad7..302176c 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/CacheControllerDispatcherProvider.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/CacheControllerDispatcherProvider.java
@@ -1,7 +1,7 @@
 /*
  * Copyright 2010-2013 Ning, Inc.
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -18,9 +18,9 @@
 
 package org.killbill.billing.util.cache;
 
-import java.util.Collection;
 import java.util.LinkedHashMap;
 import java.util.Map;
+import java.util.Set;
 
 import javax.inject.Inject;
 import javax.inject.Provider;
@@ -29,12 +29,8 @@ import org.killbill.billing.util.cache.Cachable.CacheType;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.google.common.base.Function;
-import com.google.common.collect.Collections2;
-import com.google.common.collect.ImmutableList;
 import net.sf.ehcache.CacheManager;
 import net.sf.ehcache.Ehcache;
-import net.sf.ehcache.loader.CacheLoader;
 
 // Build the abstraction layer between EhCache and Kill Bill
 public class CacheControllerDispatcherProvider implements Provider<CacheControllerDispatcher> {
@@ -42,40 +38,31 @@ public class CacheControllerDispatcherProvider implements Provider<CacheControll
     private static final Logger logger = LoggerFactory.getLogger(CacheControllerDispatcherProvider.class);
 
     private final CacheManager cacheManager;
+    private final Set<BaseCacheLoader> cacheLoaders;
 
     @Inject
-    public CacheControllerDispatcherProvider(final CacheManager cacheManager) {
+    public CacheControllerDispatcherProvider(final CacheManager cacheManager,
+                                             final Set<BaseCacheLoader> cacheLoaders) {
         this.cacheManager = cacheManager;
+        this.cacheLoaders = cacheLoaders;
     }
 
     @Override
     public CacheControllerDispatcher get() {
         final Map<CacheType, CacheController<Object, Object>> cacheControllers = new LinkedHashMap<CacheType, CacheController<Object, Object>>();
-        for (final String cacheName : cacheManager.getCacheNames()) {
-            final CacheType cacheType = CacheType.findByName(cacheName);
+        for (final BaseCacheLoader cacheLoader : cacheLoaders) {
+            final CacheType cacheType = cacheLoader.getCacheType();
 
-            final Collection<EhCacheBasedCacheController<Object, Object>> cacheControllersForCacheName = getCacheControllersForCacheName(cacheName, cacheType);
-            // EhCache supports multiple cache loaders per type, but not Kill Bill - take the first one
-            if (cacheControllersForCacheName.size() > 0) {
-                final EhCacheBasedCacheController<Object, Object> ehCacheBasedCacheController = cacheControllersForCacheName.iterator().next();
-                cacheControllers.put(cacheType, ehCacheBasedCacheController);
+            final Ehcache cache = cacheManager.getEhcache(cacheType.getCacheName());
+            if (cache == null) {
+                logger.warn("Cache for cacheName='{}' not configured - check your ehcache.xml", cacheLoader.getCacheType().getCacheName());
+                continue;
             }
-        }
-        return new CacheControllerDispatcher(cacheControllers);
-    }
 
-    private Collection<EhCacheBasedCacheController<Object, Object>> getCacheControllersForCacheName(final String name, final CacheType cacheType) {
-        final Ehcache cache = cacheManager.getEhcache(name);
-        if (cache == null) {
-            logger.warn("No cache configured for name {}", name);
-            return ImmutableList.<EhCacheBasedCacheController<Object, Object>>of();
+            final CacheController<Object, Object> ehCacheBasedCacheController = new EhCacheBasedCacheController<Object, Object>(cache, cacheLoader);
+            cacheControllers.put(cacheType, ehCacheBasedCacheController);
         }
-        // The CacheLoaders were registered in EhCacheCacheManagerProvider
-        return Collections2.transform(cache.getRegisteredCacheLoaders(), new Function<CacheLoader, EhCacheBasedCacheController<Object, Object>>() {
-            @Override
-            public EhCacheBasedCacheController<Object, Object> apply(final CacheLoader input) {
-                return new EhCacheBasedCacheController<Object, Object>(cache, cacheType);
-            }
-        });
+
+        return new CacheControllerDispatcher(cacheControllers);
     }
 }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/CacheLoaderArgument.java b/util/src/main/java/org/killbill/billing/util/cache/CacheLoaderArgument.java
index f559c0f..1724c59 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/CacheLoaderArgument.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/CacheLoaderArgument.java
@@ -1,7 +1,7 @@
 /*
  * Copyright 2010-2013 Ning, Inc.
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -18,6 +18,8 @@
 
 package org.killbill.billing.util.cache;
 
+import java.util.Arrays;
+
 import javax.annotation.Nullable;
 
 import org.killbill.billing.ObjectType;
@@ -61,4 +63,14 @@ public class CacheLoaderArgument {
     public Handle getHandle() {
         return handle;
     }
+
+    @Override
+    public String toString() {
+        final StringBuilder sb = new StringBuilder("CacheLoaderArgument{");
+        sb.append("objectType=").append(objectType);
+        sb.append(", args=").append(Arrays.toString(args));
+        sb.append(", internalTenantContext=").append(internalTenantContext);
+        sb.append('}');
+        return sb.toString();
+    }
 }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/EhCacheBasedCacheController.java b/util/src/main/java/org/killbill/billing/util/cache/EhCacheBasedCacheController.java
index 08d04d2..298de85 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/EhCacheBasedCacheController.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/EhCacheBasedCacheController.java
@@ -1,7 +1,7 @@
 /*
  * Copyright 2010-2012 Ning, Inc.
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -18,69 +18,95 @@
 
 package org.killbill.billing.util.cache;
 
-import javax.annotation.Nullable;
-
 import org.killbill.billing.util.cache.Cachable.CacheType;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
+import net.sf.ehcache.CacheException;
 import net.sf.ehcache.Ehcache;
 import net.sf.ehcache.Element;
 
 public class EhCacheBasedCacheController<K, V> implements CacheController<K, V> {
 
+    private static final Logger logger = LoggerFactory.getLogger(EhCacheBasedCacheController.class);
+
     private final Ehcache cache;
-    private final CacheType cacheType;
+    private final BaseCacheLoader<K, V> baseCacheLoader;
 
-    public EhCacheBasedCacheController(final Ehcache cache, final CacheType cacheType) {
+    public EhCacheBasedCacheController(final Ehcache cache, final BaseCacheLoader<K, V> baseCacheLoader) {
         this.cache = cache;
-        this.cacheType = cacheType;
+        this.baseCacheLoader = baseCacheLoader;
     }
 
     @Override
-    public void add(final K key, final V value) {
-        cache.putIfAbsent(new Element(key, value));
-    }
+    public V get(final K key, final CacheLoaderArgument cacheLoaderArgument) {
+        final V value;
+        if (!cache.isKeyInCache(key)) {
+            value = computeAndCacheValue(key, cacheLoaderArgument);
+        } else {
+            final Element element = cache.get(key);
+            if (element == null) {
+                value = null;
+            } else if (element.isExpired()) {
+                value = computeAndCacheValue(key, cacheLoaderArgument);
+            } else {
+                value = (V) element.getObjectValue();
+            }
+        }
 
-    @Override
-    public V get(final K key, @Nullable final CacheLoaderArgument cacheLoaderArgument) {
-        return getWithOrWithoutCacheLoaderArgument(key, cacheLoaderArgument);
+        if (value == null || value.equals(BaseCacheLoader.EMPTY_VALUE_PLACEHOLDER)) {
+            return null;
+        } else {
+            return value;
+        }
     }
 
     @Override
-    public V get(final K key) {
-        return getWithOrWithoutCacheLoaderArgument(key, null);
-    }
-
-    public void putIfAbsent(final K key, V value) {
-        final Element element = new Element(key, value);
-        cache.putIfAbsent(element);
+    public void putIfAbsent(final K key, final V value) {
+        cache.putIfAbsent(new Element(key, value));
     }
 
     @Override
     public boolean remove(final K key) {
-        return cache.remove(key);
+        if (cache.isKeyInCache(key)) {
+            cache.remove(key);
+            return true;
+        } else {
+            return false;
+        }
     }
 
     @Override
-    public int size() {
-        return cache.getSize();
+    public void removeAll() {
+        cache.removeAll();
     }
 
     @Override
-    public void removeAll() {
-        cache.removeAll();
+    public int size() {
+        return cache.getSize();
     }
 
     @Override
     public CacheType getCacheType() {
-        return cacheType;
+        return baseCacheLoader.getCacheType();
     }
 
-    private V getWithOrWithoutCacheLoaderArgument(final K key, @Nullable final CacheLoaderArgument cacheLoaderArgument) {
-        final Element element = cacheLoaderArgument != null ? cache.getWithLoader(key, null, cacheLoaderArgument) : cache.get(key);
-        if (element == null || element.getObjectValue() == null || element.getObjectValue().equals(BaseCacheLoader.EMPTY_VALUE_PLACEHOLDER)) {
+    private V computeAndCacheValue(final K key, final CacheLoaderArgument cacheLoaderArgument) {
+        final V value;
+        try {
+            value = baseCacheLoader.compute(key, cacheLoaderArgument);
+        } catch (final Exception e) {
+            logger.warn("Unable to compute cached value for key='{}' and cacheLoaderArgument='{}'", key, cacheLoaderArgument);
+            throw new CacheException(e);
+        }
+
+        if (value == null) {
             return null;
         }
-        return (V) element.getObjectValue();
-    }
 
+        // Race condition, we may compute it for nothing
+        cache.putIfAbsent(new Element(key, value));
+
+        return value;
+    }
 }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/EhCacheCacheManagerProvider.java b/util/src/main/java/org/killbill/billing/util/cache/EhCacheCacheManagerProvider.java
index 305e6f2..9ecb6bb 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/EhCacheCacheManagerProvider.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/EhCacheCacheManagerProvider.java
@@ -1,7 +1,7 @@
 /*
  * Copyright 2010-2012 Ning, Inc.
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -21,8 +21,7 @@ package org.killbill.billing.util.cache;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.URISyntaxException;
-import java.util.Collection;
-import java.util.LinkedList;
+import java.util.Set;
 
 import javax.inject.Inject;
 import javax.inject.Provider;
@@ -37,7 +36,6 @@ import com.codahale.metrics.ehcache.InstrumentedEhcache;
 import net.sf.ehcache.CacheException;
 import net.sf.ehcache.CacheManager;
 import net.sf.ehcache.Ehcache;
-import net.sf.ehcache.loader.CacheLoader;
 
 // EhCache specific provider
 public class EhCacheCacheManagerProvider implements Provider<CacheManager> {
@@ -46,43 +44,15 @@ public class EhCacheCacheManagerProvider implements Provider<CacheManager> {
 
     private final MetricRegistry metricRegistry;
     private final EhCacheConfig cacheConfig;
-    private final Collection<BaseCacheLoader> cacheLoaders = new LinkedList<BaseCacheLoader>();
+    private final Set<BaseCacheLoader> cacheLoaders;
 
     @Inject
     public EhCacheCacheManagerProvider(final MetricRegistry metricRegistry,
                                        final EhCacheConfig cacheConfig,
-                                       final ImmutableAccountCacheLoader accountCacheLoader,
-                                       final AccountBCDCacheLoader accountBCDCacheLoader,
-                                       final RecordIdCacheLoader recordIdCacheLoader,
-                                       final AccountRecordIdCacheLoader accountRecordIdCacheLoader,
-                                       final TenantRecordIdCacheLoader tenantRecordIdCacheLoader,
-                                       final ObjectIdCacheLoader objectIdCacheLoader,
-                                       final AuditLogCacheLoader auditLogCacheLoader,
-                                       final AuditLogViaHistoryCacheLoader auditLogViaHistoryCacheLoader,
-                                       final TenantCatalogCacheLoader tenantCatalogCacheLoader,
-                                       final TenantConfigCacheLoader tenantConfigCacheLoader,
-                                       final TenantOverdueConfigCacheLoader tenantOverdueConfigCacheLoader,
-                                       final TenantKVCacheLoader tenantKVCacheLoader,
-                                       final TenantCacheLoader tenantCacheLoader,
-                                       final OverriddenPlanCacheLoader overriddenPlanCacheLoader,
-                                       final TenantStateMachineConfigCacheLoader tenantStateMachineConfigCacheLoader) {
+                                       final Set<BaseCacheLoader> cacheLoaders) {
         this.metricRegistry = metricRegistry;
         this.cacheConfig = cacheConfig;
-        cacheLoaders.add(accountCacheLoader);
-        cacheLoaders.add(accountBCDCacheLoader);
-        cacheLoaders.add(recordIdCacheLoader);
-        cacheLoaders.add(accountRecordIdCacheLoader);
-        cacheLoaders.add(tenantRecordIdCacheLoader);
-        cacheLoaders.add(objectIdCacheLoader);
-        cacheLoaders.add(auditLogCacheLoader);
-        cacheLoaders.add(auditLogViaHistoryCacheLoader);
-        cacheLoaders.add(tenantCatalogCacheLoader);
-        cacheLoaders.add(tenantConfigCacheLoader);
-        cacheLoaders.add(tenantOverdueConfigCacheLoader);
-        cacheLoaders.add(tenantKVCacheLoader);
-        cacheLoaders.add(tenantCacheLoader);
-        cacheLoaders.add(overriddenPlanCacheLoader);
-        cacheLoaders.add(tenantStateMachineConfigCacheLoader);
+        this.cacheLoaders = cacheLoaders;
     }
 
     @Override
@@ -98,8 +68,6 @@ public class EhCacheCacheManagerProvider implements Provider<CacheManager> {
         }
 
         for (final BaseCacheLoader cacheLoader : cacheLoaders) {
-            cacheLoader.init();
-
             final Ehcache cache = cacheManager.getEhcache(cacheLoader.getCacheType().getCacheName());
 
             if (cache == null) {
@@ -107,12 +75,6 @@ public class EhCacheCacheManagerProvider implements Provider<CacheManager> {
                 continue;
             }
 
-            // Make sure we start from a clean state - this is mainly useful for tests
-            for (final CacheLoader existingCacheLoader : cache.getRegisteredCacheLoaders()) {
-                cache.unregisterCacheLoader(existingCacheLoader);
-            }
-            cache.registerCacheLoader(cacheLoader);
-
             // Instrument the cache
             final Ehcache decoratedCache = InstrumentedEhcache.instrument(metricRegistry, cache);
             try {
@@ -121,6 +83,7 @@ public class EhCacheCacheManagerProvider implements Provider<CacheManager> {
                 logger.warn("Unable to instrument cache {}: {}", cache.getName(), e.getMessage());
             }
         }
+
         return cacheManager;
     }
 }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/ImmutableAccountCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/ImmutableAccountCacheLoader.java
index 866c44e..8634a01 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/ImmutableAccountCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/ImmutableAccountCacheLoader.java
@@ -1,6 +1,6 @@
 /*
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -17,10 +17,11 @@
 
 package org.killbill.billing.util.cache;
 
+import org.killbill.billing.account.api.ImmutableAccountData;
 import org.killbill.billing.callcontext.InternalTenantContext;
 import org.killbill.billing.util.cache.Cachable.CacheType;
 
-public class ImmutableAccountCacheLoader extends BaseCacheLoader {
+public class ImmutableAccountCacheLoader extends BaseCacheLoader<Long, ImmutableAccountData> {
 
     @Override
     public CacheType getCacheType() {
@@ -28,30 +29,18 @@ public class ImmutableAccountCacheLoader extends BaseCacheLoader {
     }
 
     @Override
-    public Object load(final Object key, final Object argument) {
-
-        checkCacheLoaderStatus();
-
-        if (!(key instanceof Long)) {
-            throw new IllegalArgumentException("Unexpected key type of " + key.getClass().getName());
-        }
-
-        if (!(argument instanceof CacheLoaderArgument)) {
-            throw new IllegalArgumentException("Unexpected argument type of " + argument.getClass().getName());
-        }
-
-        final CacheLoaderArgument cacheLoaderArgument = (CacheLoaderArgument) argument;
-
+    public ImmutableAccountData compute(final Long key, final CacheLoaderArgument cacheLoaderArgument) {
         if (cacheLoaderArgument.getArgs() == null ||
             !(cacheLoaderArgument.getArgs()[0] instanceof LoaderCallback)) {
             throw new IllegalArgumentException("Missing LoaderCallback from the arguments ");
         }
 
         final LoaderCallback callback = (LoaderCallback) cacheLoaderArgument.getArgs()[0];
-        return callback.loadAccount((Long) key, cacheLoaderArgument.getInternalTenantContext());
+        return callback.loadAccount(key, cacheLoaderArgument.getInternalTenantContext());
     }
 
     public interface LoaderCallback {
-        Object loadAccount(final Long recordId, final InternalTenantContext context);
+
+        ImmutableAccountData loadAccount(final Long recordId, final InternalTenantContext context);
     }
 }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/ObjectIdCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/ObjectIdCacheLoader.java
index fd357ab..cda30b6 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/ObjectIdCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/ObjectIdCacheLoader.java
@@ -1,6 +1,6 @@
 /*
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -17,6 +17,8 @@
 
 package org.killbill.billing.util.cache;
 
+import java.util.UUID;
+
 import javax.inject.Inject;
 import javax.inject.Singleton;
 
@@ -25,10 +27,8 @@ import org.killbill.billing.util.cache.Cachable.CacheType;
 import org.killbill.billing.util.dao.NonEntityDao;
 import org.skife.jdbi.v2.Handle;
 
-import net.sf.ehcache.loader.CacheLoader;
-
 @Singleton
-public class ObjectIdCacheLoader extends BaseIdCacheLoader implements CacheLoader {
+public class ObjectIdCacheLoader extends BaseIdCacheLoader<UUID> {
 
     private final NonEntityDao nonEntityDao;
 
@@ -44,7 +44,7 @@ public class ObjectIdCacheLoader extends BaseIdCacheLoader implements CacheLoade
     }
 
     @Override
-    protected Object doRetrieveOperation(final String rawKey, final ObjectType objectType, final Handle handle) {
+    protected UUID doRetrieveOperation(final String rawKey, final ObjectType objectType, final Handle handle) {
         final Long recordId = Long.valueOf(rawKey);
         return nonEntityDao.retrieveIdFromObjectInTransaction(recordId, objectType, null, handle);
     }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/OverriddenPlanCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/OverriddenPlanCacheLoader.java
index 52c4a07..79d73b8 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/OverriddenPlanCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/OverriddenPlanCacheLoader.java
@@ -1,6 +1,6 @@
 /*
- * Copyright 2014-2016 Groupon, Inc
- * Copyright 2014-2016 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -22,13 +22,14 @@ import javax.inject.Singleton;
 
 import org.killbill.billing.callcontext.InternalTenantContext;
 import org.killbill.billing.catalog.api.CatalogApiException;
+import org.killbill.billing.catalog.api.Plan;
 import org.killbill.billing.catalog.api.StaticCatalog;
 import org.killbill.billing.util.cache.Cachable.CacheType;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 @Singleton
-public class OverriddenPlanCacheLoader extends BaseCacheLoader {
+public class OverriddenPlanCacheLoader extends BaseCacheLoader<String, Plan> {
 
     private final Logger log = LoggerFactory.getLogger(OverriddenPlanCacheLoader.class);
 
@@ -43,18 +44,7 @@ public class OverriddenPlanCacheLoader extends BaseCacheLoader {
     }
 
     @Override
-    public Object load(final Object key, final Object argument) {
-        checkCacheLoaderStatus();
-
-        if (!(key instanceof String)) {
-            throw new IllegalArgumentException("Unexpected key type of " + key.getClass().getName());
-        }
-        if (!(argument instanceof CacheLoaderArgument)) {
-            throw new IllegalArgumentException("Unexpected argument type of " + argument.getClass().getName());
-        }
-
-
-        final CacheLoaderArgument cacheLoaderArgument = (CacheLoaderArgument) argument;
+    public Plan compute(final String key, final CacheLoaderArgument cacheLoaderArgument) {
         if (cacheLoaderArgument.getArgs() == null || cacheLoaderArgument.getArgs().length != 2) {
             throw new IllegalArgumentException("Invalid arguments for overridden plans");
         }
@@ -66,11 +56,10 @@ public class OverriddenPlanCacheLoader extends BaseCacheLoader {
             throw new IllegalArgumentException("Invalid arguments for overridden plans: missing catalog from argument");
         }
 
-
-        final String planName = (String) key;
+        final String planName = key;
         final LoaderCallback callback = (LoaderCallback) cacheLoaderArgument.getArgs()[0];
         final StaticCatalog catalog = (StaticCatalog) cacheLoaderArgument.getArgs()[1];
-        final InternalTenantContext internalTenantContext = ((CacheLoaderArgument) argument).getInternalTenantContext();
+        final InternalTenantContext internalTenantContext = cacheLoaderArgument.getInternalTenantContext();
         try {
             log.info("Loading overridden plan {} for tenant {}", planName, internalTenantContext.getTenantRecordId());
 
@@ -82,6 +71,7 @@ public class OverriddenPlanCacheLoader extends BaseCacheLoader {
     }
 
     public interface LoaderCallback {
-        public Object loadPlan(final String planName, final StaticCatalog catalog, final InternalTenantContext context) throws CatalogApiException;
+
+        public Plan loadPlan(final String planName, final StaticCatalog catalog, final InternalTenantContext context) throws CatalogApiException;
     }
 }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/RecordIdCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/RecordIdCacheLoader.java
index 08efe2e..a7027a8 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/RecordIdCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/RecordIdCacheLoader.java
@@ -1,7 +1,7 @@
 /*
  * Copyright 2010-2012 Ning, Inc.
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -28,10 +28,8 @@ import org.killbill.billing.util.cache.Cachable.CacheType;
 import org.killbill.billing.util.dao.NonEntityDao;
 import org.skife.jdbi.v2.Handle;
 
-import net.sf.ehcache.loader.CacheLoader;
-
 @Singleton
-public class RecordIdCacheLoader extends BaseIdCacheLoader implements CacheLoader {
+public class RecordIdCacheLoader extends BaseIdCacheLoader<Long> {
 
     private final NonEntityDao nonEntityDao;
 
@@ -47,7 +45,7 @@ public class RecordIdCacheLoader extends BaseIdCacheLoader implements CacheLoade
     }
 
     @Override
-    protected Object doRetrieveOperation(final String rawKey, final ObjectType objectType, final Handle handle) {
+    protected Long doRetrieveOperation(final String rawKey, final ObjectType objectType, final Handle handle) {
         return nonEntityDao.retrieveRecordIdFromObjectInTransaction(UUID.fromString(rawKey), objectType, null, handle);
     }
 }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/TenantCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/TenantCacheLoader.java
index bacafa8..1ed03a5 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/TenantCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/TenantCacheLoader.java
@@ -1,6 +1,6 @@
 /*
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -26,7 +26,7 @@ import org.killbill.billing.tenant.api.TenantInternalApi;
 import org.killbill.billing.util.cache.Cachable.CacheType;
 
 @Singleton
-public class TenantCacheLoader extends BaseCacheLoader {
+public class TenantCacheLoader extends BaseCacheLoader<String, Tenant> {
 
     private final TenantInternalApi tenantApi;
 
@@ -42,19 +42,10 @@ public class TenantCacheLoader extends BaseCacheLoader {
     }
 
     @Override
-    public Object load(final Object key, final Object argument) {
-        checkCacheLoaderStatus();
-
-        if (!(key instanceof String)) {
-            throw new IllegalArgumentException("Unexpected key type of " + key.getClass().getName());
-        }
-        if (!(argument instanceof CacheLoaderArgument)) {
-            throw new IllegalArgumentException("Unexpected key type of " + argument.getClass().getName());
-        }
-
+    public Tenant compute(final String key, final CacheLoaderArgument cacheLoaderArgument) {
         try {
-            return tenantApi.getTenantByApiKey((String) key);
-        } catch (TenantApiException e) {
+            return tenantApi.getTenantByApiKey(key);
+        } catch (final TenantApiException e) {
             throw new IllegalStateException("TenantCacheLoader cannot find value for key " + key);
         }
     }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/TenantCatalogCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/TenantCatalogCacheLoader.java
index b3f9305..03a4ee3 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/TenantCatalogCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/TenantCatalogCacheLoader.java
@@ -1,6 +1,6 @@
 /*
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -23,6 +23,7 @@ import javax.inject.Inject;
 import javax.inject.Singleton;
 
 import org.killbill.billing.callcontext.InternalTenantContext;
+import org.killbill.billing.catalog.api.Catalog;
 import org.killbill.billing.catalog.api.CatalogApiException;
 import org.killbill.billing.tenant.api.TenantInternalApi;
 import org.killbill.billing.util.cache.Cachable.CacheType;
@@ -30,7 +31,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 @Singleton
-public class TenantCatalogCacheLoader extends BaseCacheLoader {
+public class TenantCatalogCacheLoader extends BaseCacheLoader<Long, Catalog> {
 
     private final Logger log = LoggerFactory.getLogger(TenantCatalogCacheLoader.class);
 
@@ -48,19 +49,9 @@ public class TenantCatalogCacheLoader extends BaseCacheLoader {
     }
 
     @Override
-    public Object load(final Object key, final Object argument) {
-        checkCacheLoaderStatus();
-
-        if (!(key instanceof Long)) {
-            throw new IllegalArgumentException("Unexpected key type of " + key.getClass().getName());
-        }
-        if (!(argument instanceof CacheLoaderArgument)) {
-            throw new IllegalArgumentException("Unexpected argument type of " + argument.getClass().getName());
-        }
-
-        final Long tenantRecordId = (Long) key;
+    public Catalog compute(final Long key, final CacheLoaderArgument cacheLoaderArgument) {
+        final Long tenantRecordId = key;
         final InternalTenantContext internalTenantContext = new InternalTenantContext(tenantRecordId);
-        final CacheLoaderArgument cacheLoaderArgument = (CacheLoaderArgument) argument;
 
         if (cacheLoaderArgument.getArgs() == null || !(cacheLoaderArgument.getArgs()[0] instanceof LoaderCallback)) {
             throw new IllegalArgumentException("Missing LoaderCallback from the arguments ");
@@ -80,6 +71,7 @@ public class TenantCatalogCacheLoader extends BaseCacheLoader {
     }
 
     public interface LoaderCallback {
-        public Object loadCatalog(final List<String> catalogXMLs, final Long tenantRecordId) throws CatalogApiException;
+
+        public Catalog loadCatalog(final List<String> catalogXMLs, final Long tenantRecordId) throws CatalogApiException;
     }
 }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/TenantConfigCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/TenantConfigCacheLoader.java
index caced95..d71ad0d 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/TenantConfigCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/TenantConfigCacheLoader.java
@@ -1,6 +1,6 @@
 /*
- * Copyright 2014-2016 Groupon, Inc
- * Copyright 2014-2016 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -25,11 +25,12 @@ import javax.inject.Singleton;
 import org.killbill.billing.callcontext.InternalTenantContext;
 import org.killbill.billing.tenant.api.TenantInternalApi;
 import org.killbill.billing.util.cache.Cachable.CacheType;
+import org.killbill.billing.util.config.tenant.PerTenantConfig;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 @Singleton
-public class TenantConfigCacheLoader extends BaseCacheLoader {
+public class TenantConfigCacheLoader extends BaseCacheLoader<Long, PerTenantConfig> {
 
     private final Logger log = LoggerFactory.getLogger(TenantConfigCacheLoader.class);
 
@@ -47,19 +48,9 @@ public class TenantConfigCacheLoader extends BaseCacheLoader {
     }
 
     @Override
-    public Object load(final Object key, final Object argument) {
-        checkCacheLoaderStatus();
-
-        if (!(key instanceof Long)) {
-            throw new IllegalArgumentException("Unexpected key type of " + key.getClass().getName());
-        }
-        if (!(argument instanceof CacheLoaderArgument)) {
-            throw new IllegalArgumentException("Unexpected argument type of " + argument.getClass().getName());
-        }
-
-        final Long tenantRecordId = (Long) key;
+    public PerTenantConfig compute(final Long key, final CacheLoaderArgument cacheLoaderArgument) {
+        final Long tenantRecordId = key;
         final InternalTenantContext internalTenantContext = new InternalTenantContext(tenantRecordId);
-        final CacheLoaderArgument cacheLoaderArgument = (CacheLoaderArgument) argument;
 
         if (cacheLoaderArgument.getArgs() == null || !(cacheLoaderArgument.getArgs()[0] instanceof LoaderCallback)) {
             throw new IllegalArgumentException("Missing LoaderCallback from the arguments ");
@@ -77,7 +68,7 @@ public class TenantConfigCacheLoader extends BaseCacheLoader {
     }
 
     public interface LoaderCallback {
-        public Object loadConfig(final String inputJson) throws IOException;
-    }
 
+        public PerTenantConfig loadConfig(final String inputJson) throws IOException;
+    }
 }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/TenantKVCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/TenantKVCacheLoader.java
index a949445..5dcbca5 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/TenantKVCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/TenantKVCacheLoader.java
@@ -1,6 +1,6 @@
 /*
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -27,7 +27,7 @@ import org.killbill.billing.tenant.api.TenantInternalApi;
 import org.killbill.billing.util.cache.Cachable.CacheType;
 
 @Singleton
-public class TenantKVCacheLoader extends BaseCacheLoader {
+public class TenantKVCacheLoader extends BaseCacheLoader<String, String> {
 
     private final TenantInternalApi tenantApi;
 
@@ -43,16 +43,8 @@ public class TenantKVCacheLoader extends BaseCacheLoader {
     }
 
     @Override
-    public Object load(final Object key, final Object argument) {
-        checkCacheLoaderStatus();
-
-        if (!(key instanceof String)) {
-            throw new IllegalArgumentException("Unexpected key type of " + key.getClass().getName());
-        }
-        if (!(argument instanceof CacheLoaderArgument)) {
-            throw new IllegalArgumentException("Unexpected key type of " + argument.getClass().getName());
-        }
-        final String[] parts = ((String) key).split(CacheControllerDispatcher.CACHE_KEY_SEPARATOR);
+    public String compute(final String key, final CacheLoaderArgument cacheLoaderArgument) {
+        final String[] parts = key.split(CacheControllerDispatcher.CACHE_KEY_SEPARATOR);
         final String rawKey = parts[0];
         final String tenantRecordId = parts[1];
 
diff --git a/util/src/main/java/org/killbill/billing/util/cache/TenantOverdueConfigCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/TenantOverdueConfigCacheLoader.java
index 81ebe00..6c95814 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/TenantOverdueConfigCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/TenantOverdueConfigCacheLoader.java
@@ -1,6 +1,6 @@
 /*
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -22,13 +22,14 @@ import javax.inject.Singleton;
 
 import org.killbill.billing.callcontext.InternalTenantContext;
 import org.killbill.billing.overdue.api.OverdueApiException;
+import org.killbill.billing.overdue.api.OverdueConfig;
 import org.killbill.billing.tenant.api.TenantInternalApi;
 import org.killbill.billing.util.cache.Cachable.CacheType;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 @Singleton
-public class TenantOverdueConfigCacheLoader extends BaseCacheLoader {
+public class TenantOverdueConfigCacheLoader extends BaseCacheLoader<Long, Object> {
 
     private static final Logger log = LoggerFactory.getLogger(TenantOverdueConfigCacheLoader.class);
 
@@ -46,19 +47,9 @@ public class TenantOverdueConfigCacheLoader extends BaseCacheLoader {
     }
 
     @Override
-    public Object load(final Object key, final Object argument) {
-        checkCacheLoaderStatus();
-
-        if (!(key instanceof Long)) {
-            throw new IllegalArgumentException("Unexpected key type of " + key.getClass().getName());
-        }
-        if (!(argument instanceof CacheLoaderArgument)) {
-            throw new IllegalArgumentException("Unexpected argument type of " + argument.getClass().getName());
-        }
-
-        final Long tenantRecordId = (Long) key;
+    public Object compute(final Long key, final CacheLoaderArgument cacheLoaderArgument) {
+        final Long tenantRecordId = key;
         final InternalTenantContext internalTenantContext = new InternalTenantContext(tenantRecordId);
-        final CacheLoaderArgument cacheLoaderArgument = (CacheLoaderArgument) argument;
 
         if (cacheLoaderArgument.getArgs() == null || !(cacheLoaderArgument.getArgs()[0] instanceof LoaderCallback)) {
             throw new IllegalArgumentException("Missing LoaderCallback from the arguments");
@@ -81,6 +72,6 @@ public class TenantOverdueConfigCacheLoader extends BaseCacheLoader {
 
     public interface LoaderCallback {
 
-        public Object loadOverdueConfig(final String overdueConfigXML) throws OverdueApiException;
+        public OverdueConfig loadOverdueConfig(final String overdueConfigXML) throws OverdueApiException;
     }
 }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/TenantRecordIdCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/TenantRecordIdCacheLoader.java
index 17a62af..1144e59 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/TenantRecordIdCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/TenantRecordIdCacheLoader.java
@@ -1,7 +1,7 @@
 /*
  * Copyright 2010-2013 Ning, Inc.
- * Copyright 2014-2015 Groupon, Inc
- * Copyright 2014-2015 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -28,10 +28,8 @@ import org.killbill.billing.util.cache.Cachable.CacheType;
 import org.killbill.billing.util.dao.NonEntityDao;
 import org.skife.jdbi.v2.Handle;
 
-import net.sf.ehcache.loader.CacheLoader;
-
 @Singleton
-public class TenantRecordIdCacheLoader extends BaseIdCacheLoader implements CacheLoader {
+public class TenantRecordIdCacheLoader extends BaseIdCacheLoader<Long> {
 
     private final NonEntityDao nonEntityDao;
 
@@ -47,7 +45,7 @@ public class TenantRecordIdCacheLoader extends BaseIdCacheLoader implements Cach
     }
 
     @Override
-    protected Object doRetrieveOperation(final String rawKey, final ObjectType objectType, final Handle handle) {
+    protected Long doRetrieveOperation(final String rawKey, final ObjectType objectType, final Handle handle) {
         return nonEntityDao.retrieveTenantRecordIdFromObjectInTransaction(UUID.fromString(rawKey), objectType, null, handle);
     }
 }
diff --git a/util/src/main/java/org/killbill/billing/util/cache/TenantStateMachineConfigCacheLoader.java b/util/src/main/java/org/killbill/billing/util/cache/TenantStateMachineConfigCacheLoader.java
index c6d5489..a05db1f 100644
--- a/util/src/main/java/org/killbill/billing/util/cache/TenantStateMachineConfigCacheLoader.java
+++ b/util/src/main/java/org/killbill/billing/util/cache/TenantStateMachineConfigCacheLoader.java
@@ -1,6 +1,6 @@
 /*
- * Copyright 2016 Groupon, Inc
- * Copyright 2016 The Billing Project, LLC
+ * Copyright 2016-2017 Groupon, Inc
+ * Copyright 2016-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -32,7 +32,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 @Singleton
-public class TenantStateMachineConfigCacheLoader extends BaseCacheLoader {
+public class TenantStateMachineConfigCacheLoader extends BaseCacheLoader<String, Object> {
 
     private static final Pattern PATTERN = Pattern.compile(TenantKey.PLUGIN_PAYMENT_STATE_MACHINE_.toString() + "(.*)");
     private static final Logger log = LoggerFactory.getLogger(TenantStateMachineConfigCacheLoader.class);
@@ -51,16 +51,7 @@ public class TenantStateMachineConfigCacheLoader extends BaseCacheLoader {
     }
 
     @Override
-    public Object load(final Object key, final Object argument) {
-        checkCacheLoaderStatus();
-
-        if (!(key instanceof String)) {
-            throw new IllegalArgumentException("Unexpected key type of " + key.getClass().getName());
-        }
-        if (!(argument instanceof CacheLoaderArgument)) {
-            throw new IllegalArgumentException("Unexpected key type of " + argument.getClass().getName());
-        }
-
+    public Object compute(final String key, final CacheLoaderArgument cacheLoaderArgument) {
         final String[] parts = ((String) key).split(CacheControllerDispatcher.CACHE_KEY_SEPARATOR);
         final String rawKey = parts[0];
         final Matcher matcher = PATTERN.matcher(rawKey);
@@ -70,7 +61,6 @@ public class TenantStateMachineConfigCacheLoader extends BaseCacheLoader {
         final String pluginName = matcher.group(1);
         final String tenantRecordId = parts[1];
 
-        final CacheLoaderArgument cacheLoaderArgument = (CacheLoaderArgument) argument;
         final LoaderCallback callback = (LoaderCallback) cacheLoaderArgument.getArgs()[0];
 
         final InternalTenantContext internalTenantContext = new InternalTenantContext(Long.valueOf(tenantRecordId));
diff --git a/util/src/main/java/org/killbill/billing/util/config/tenant/CacheConfig.java b/util/src/main/java/org/killbill/billing/util/config/tenant/CacheConfig.java
index 1338b65..a1956d2 100644
--- a/util/src/main/java/org/killbill/billing/util/config/tenant/CacheConfig.java
+++ b/util/src/main/java/org/killbill/billing/util/config/tenant/CacheConfig.java
@@ -1,6 +1,6 @@
 /*
- * Copyright 2014-2016 Groupon, Inc
- * Copyright 2014-2016 The Billing Project, LLC
+ * Copyright 2014-2017 Groupon, Inc
+ * Copyright 2014-2017 The Billing Project, LLC
  *
  * The Billing Project licenses this file to you under the Apache License, version 2.0
  * (the "License"); you may not use this file except in compliance with the
@@ -59,7 +59,7 @@ public class CacheConfig {
     private CacheLoaderArgument initializeCacheLoaderArgument() {
         final LoaderCallback loaderCallback = new LoaderCallback() {
             @Override
-            public Object loadConfig(@Nullable final String inputJson) throws IOException {
+            public PerTenantConfig loadConfig(@Nullable final String inputJson) throws IOException {
                 return inputJson != null ? objectMapper.readValue(inputJson, PerTenantConfig.class) : new PerTenantConfig();
             }
         };
@@ -69,5 +69,4 @@ public class CacheConfig {
         final InternalTenantContext notUsed = null;
         return new CacheLoaderArgument(irrelevant, args, notUsed);
     }
-
 }
diff --git a/util/src/main/java/org/killbill/billing/util/entity/dao/EntitySqlDaoWrapperInvocationHandler.java b/util/src/main/java/org/killbill/billing/util/entity/dao/EntitySqlDaoWrapperInvocationHandler.java
index 872ba10..e4acb71 100644
--- a/util/src/main/java/org/killbill/billing/util/entity/dao/EntitySqlDaoWrapperInvocationHandler.java
+++ b/util/src/main/java/org/killbill/billing/util/entity/dao/EntitySqlDaoWrapperInvocationHandler.java
@@ -345,19 +345,19 @@ public class EntitySqlDaoWrapperInvocationHandler<S extends EntitySqlDao<M, E>, 
     private void populateCacheOnGetByIdInvocation(M model) {
 
         final CacheController<Object, Object> cacheRecordId = cacheControllerDispatcher.getCacheController(CacheType.RECORD_ID);
-        cacheRecordId.add(getKey(model.getId().toString(), CacheType.RECORD_ID, model.getTableName()), model.getRecordId());
+        cacheRecordId.putIfAbsent(getKey(model.getId().toString(), CacheType.RECORD_ID, model.getTableName()), model.getRecordId());
 
         final CacheController<Object, Object> cacheObjectId = cacheControllerDispatcher.getCacheController(CacheType.OBJECT_ID);
-        cacheObjectId.add(getKey(model.getRecordId().toString(), CacheType.OBJECT_ID, model.getTableName()), model.getId());
+        cacheObjectId.putIfAbsent(getKey(model.getRecordId().toString(), CacheType.OBJECT_ID, model.getTableName()), model.getId());
 
         if (model.getTenantRecordId() != null) {
             final CacheController<Object, Object> cacheTenantRecordId = cacheControllerDispatcher.getCacheController(CacheType.TENANT_RECORD_ID);
-            cacheTenantRecordId.add(getKey(model.getId().toString(), CacheType.TENANT_RECORD_ID, model.getTableName()), model.getTenantRecordId());
+            cacheTenantRecordId.putIfAbsent(getKey(model.getId().toString(), CacheType.TENANT_RECORD_ID, model.getTableName()), model.getTenantRecordId());
         }
 
         if (model.getAccountRecordId() != null) {
             final CacheController<Object, Object> cacheAccountRecordId = cacheControllerDispatcher.getCacheController(CacheType.ACCOUNT_RECORD_ID);
-            cacheAccountRecordId.add(getKey(model.getId().toString(), CacheType.ACCOUNT_RECORD_ID, model.getTableName()), model.getAccountRecordId());
+            cacheAccountRecordId.putIfAbsent(getKey(model.getId().toString(), CacheType.ACCOUNT_RECORD_ID, model.getTableName()), model.getAccountRecordId());
         }
     }
 
diff --git a/util/src/main/java/org/killbill/billing/util/glue/CacheModule.java b/util/src/main/java/org/killbill/billing/util/glue/CacheModule.java
index 5a3b660..4ea728c 100644
--- a/util/src/main/java/org/killbill/billing/util/glue/CacheModule.java
+++ b/util/src/main/java/org/killbill/billing/util/glue/CacheModule.java
@@ -19,12 +19,29 @@
 package org.killbill.billing.util.glue;
 
 import org.killbill.billing.platform.api.KillbillConfigSource;
+import org.killbill.billing.util.cache.AccountBCDCacheLoader;
+import org.killbill.billing.util.cache.AccountRecordIdCacheLoader;
+import org.killbill.billing.util.cache.AuditLogCacheLoader;
+import org.killbill.billing.util.cache.AuditLogViaHistoryCacheLoader;
+import org.killbill.billing.util.cache.BaseCacheLoader;
 import org.killbill.billing.util.cache.CacheControllerDispatcher;
 import org.killbill.billing.util.cache.CacheControllerDispatcherProvider;
 import org.killbill.billing.util.cache.EhCacheCacheManagerProvider;
+import org.killbill.billing.util.cache.ImmutableAccountCacheLoader;
+import org.killbill.billing.util.cache.ObjectIdCacheLoader;
+import org.killbill.billing.util.cache.OverriddenPlanCacheLoader;
+import org.killbill.billing.util.cache.RecordIdCacheLoader;
+import org.killbill.billing.util.cache.TenantCacheLoader;
+import org.killbill.billing.util.cache.TenantCatalogCacheLoader;
+import org.killbill.billing.util.cache.TenantConfigCacheLoader;
+import org.killbill.billing.util.cache.TenantKVCacheLoader;
+import org.killbill.billing.util.cache.TenantOverdueConfigCacheLoader;
+import org.killbill.billing.util.cache.TenantRecordIdCacheLoader;
+import org.killbill.billing.util.cache.TenantStateMachineConfigCacheLoader;
 import org.killbill.billing.util.config.definition.EhCacheConfig;
 import org.skife.config.ConfigurationObjectFactory;
 
+import com.google.inject.multibindings.Multibinder;
 import net.sf.ehcache.CacheManager;
 
 public class CacheModule extends KillBillModule {
@@ -43,5 +60,22 @@ public class CacheModule extends KillBillModule {
 
         // Kill Bill generic cache dispatcher
         bind(CacheControllerDispatcher.class).toProvider(CacheControllerDispatcherProvider.class).asEagerSingleton();
+
+        final Multibinder<BaseCacheLoader> resultSetMapperSetBinder = Multibinder.newSetBinder(binder(), BaseCacheLoader.class);
+        resultSetMapperSetBinder.addBinding().to(ImmutableAccountCacheLoader.class).asEagerSingleton();
+        resultSetMapperSetBinder.addBinding().to(AccountBCDCacheLoader.class).asEagerSingleton();
+        resultSetMapperSetBinder.addBinding().to(RecordIdCacheLoader.class).asEagerSingleton();
+        resultSetMapperSetBinder.addBinding().to(AccountRecordIdCacheLoader.class).asEagerSingleton();
+        resultSetMapperSetBinder.addBinding().to(TenantRecordIdCacheLoader.class).asEagerSingleton();
+        resultSetMapperSetBinder.addBinding().to(ObjectIdCacheLoader.class).asEagerSingleton();
+        resultSetMapperSetBinder.addBinding().to(AuditLogCacheLoader.class).asEagerSingleton();
+        resultSetMapperSetBinder.addBinding().to(AuditLogViaHistoryCacheLoader.class).asEagerSingleton();
+        resultSetMapperSetBinder.addBinding().to(TenantCatalogCacheLoader.class).asEagerSingleton();
+        resultSetMapperSetBinder.addBinding().to(TenantConfigCacheLoader.class).asEagerSingleton();
+        resultSetMapperSetBinder.addBinding().to(TenantOverdueConfigCacheLoader.class).asEagerSingleton();
+        resultSetMapperSetBinder.addBinding().to(TenantKVCacheLoader.class).asEagerSingleton();
+        resultSetMapperSetBinder.addBinding().to(TenantCacheLoader.class).asEagerSingleton();
+        resultSetMapperSetBinder.addBinding().to(OverriddenPlanCacheLoader.class).asEagerSingleton();
+        resultSetMapperSetBinder.addBinding().to(TenantStateMachineConfigCacheLoader.class).asEagerSingleton();
     }
 }