CacheEventListener

com.facebook.cache.common.CacheEventListener

Known Indirect Subclasses

BaseCacheEventListener, NoOpCacheEventListener

Class Overview

An interface for logging various cache events.

In all callback methods, the CacheEvent object should not be held beyond the method itself as they may be automatically recycled.

Nested Classes
enum	CacheEventListener.EvictionReason

Public Methods
abstract void	onCleared() Triggered by a full cache clearance.
abstract void	onEviction(CacheEvent cacheEvent) Triggered by an eviction from cache.
abstract void	onHit(CacheEvent cacheEvent) Triggered by a cache hit.
abstract void	onMiss(CacheEvent cacheEvent) Triggered by a cache miss for the given key.
abstract void	onReadException(CacheEvent cacheEvent) Triggered if a cache hit was attempted but an exception was thrown trying to read the resource from storage.
abstract void	onWriteAttempt(CacheEvent cacheEvent) Triggered at the start of the process to save a resource in cache.
abstract void	onWriteException(CacheEvent cacheEvent) Triggered if a cache write was attempted but an exception was thrown trying to write the exception to storage.
abstract void	onWriteSuccess(CacheEvent cacheEvent) Triggered after a resource has been successfully written to cache.

Triggered by a full cache clearance.

Triggered by an eviction from cache.

Triggered by a cache hit.

Triggered by a cache miss for the given key.

Triggered if a cache hit was attempted but an exception was thrown trying to read the resource from storage.

Triggered at the start of the process to save a resource in cache.

Triggered if a cache write was attempted but an exception was thrown trying to write the exception to storage.

Triggered after a resource has been successfully written to cache.