public class EhcacheHttpCacheStorage<T> extends AbstractSerializingCacheStorage<T,T>
This class is a storage backend for cache entries that uses the popular Ehcache cache implementation. In particular, this backend allows for spillover to disk, where the cache can be effectively larger than memory, and cached responses are paged into and out of memory from disk as needed.
N.B. Since the Ehcache is configured ahead of time with a
maximum number of cache entries, this effectively ignores the
CacheConfig.getMaxCacheEntries() maximum cache entries}
specified by a provided CacheConfig.
Please refer to the Ehcache documentation for details on how to configure the Ehcache itself.
| Constructor and Description |
|---|
EhcacheHttpCacheStorage(org.ehcache.Cache<String,T> cache,
CacheConfig config,
HttpCacheEntrySerializer<T> serializer)
Constructs a storage backend using the provided Ehcache
with the given configuration options, but using an alternative
cache entry serialization strategy.
|
| Modifier and Type | Method and Description |
|---|---|
protected Map<String,T> |
bulkRestore(Collection<String> storageKeys) |
static EhcacheHttpCacheStorage<HttpCacheStorageEntry> |
createObjectCache(org.ehcache.Cache<String,HttpCacheStorageEntry> cache,
CacheConfig config)
Creates cache that stores
HttpCacheStorageEntrys without direct serialization. |
static EhcacheHttpCacheStorage<byte[]> |
createSerializedCache(org.ehcache.Cache<String,byte[]> cache,
CacheConfig config)
Creates cache that stores serialized
HttpCacheStorageEntrys. |
protected void |
delete(String storageKey) |
protected String |
digestToStorageKey(String key) |
protected T |
getForUpdateCAS(String storageKey) |
protected T |
getStorageObject(T element) |
protected T |
restore(String storageKey) |
protected void |
store(String storageKey,
T storageObject) |
protected boolean |
updateCAS(String storageKey,
T oldStorageObject,
T storageObject) |
getEntries, getEntry, putEntry, removeEntry, updateEntrypublic EhcacheHttpCacheStorage(org.ehcache.Cache<String,T> cache, CacheConfig config, HttpCacheEntrySerializer<T> serializer)
cache - where to store cached origin responsesconfig - cache storage configuration options - note that
the setting for max object size will be ignored and
should be configured in the Ehcache instead.serializer - alternative serialization mechanismpublic static EhcacheHttpCacheStorage<HttpCacheStorageEntry> createObjectCache(org.ehcache.Cache<String,HttpCacheStorageEntry> cache, CacheConfig config)
HttpCacheStorageEntrys without direct serialization.public static EhcacheHttpCacheStorage<byte[]> createSerializedCache(org.ehcache.Cache<String,byte[]> cache, CacheConfig config)
HttpCacheStorageEntrys.protected String digestToStorageKey(String key)
digestToStorageKey in class AbstractSerializingCacheStorage<T,T>protected void store(String storageKey, T storageObject) throws ResourceIOException
store in class AbstractSerializingCacheStorage<T,T>ResourceIOExceptionprotected T restore(String storageKey) throws ResourceIOException
restore in class AbstractSerializingCacheStorage<T,T>ResourceIOExceptionprotected T getForUpdateCAS(String storageKey) throws ResourceIOException
getForUpdateCAS in class AbstractSerializingCacheStorage<T,T>ResourceIOExceptionprotected T getStorageObject(T element) throws ResourceIOException
getStorageObject in class AbstractSerializingCacheStorage<T,T>ResourceIOExceptionprotected boolean updateCAS(String storageKey, T oldStorageObject, T storageObject) throws ResourceIOException
updateCAS in class AbstractSerializingCacheStorage<T,T>ResourceIOExceptionprotected void delete(String storageKey) throws ResourceIOException
delete in class AbstractSerializingCacheStorage<T,T>ResourceIOExceptionprotected Map<String,T> bulkRestore(Collection<String> storageKeys) throws ResourceIOException
bulkRestore in class AbstractSerializingCacheStorage<T,T>ResourceIOExceptionCopyright © 2010–2022 The Apache Software Foundation. All rights reserved.