CacheEvent

```
public interface CacheEvent

                    
```
Interface to provide details of an individual cache event.
All values may be null depending on the kind of event. See the docs for each method to see when to expect values to be available.

Method Summary

Modifier and Type	Method	Description
`abstract CacheKey`	`getCacheKey()`	Gets the cache key related to this event.
`abstract String`	`getResourceId()`	Gets the resource ID for the cached item.
`abstract long`	`getItemSize()`	Gets the size of the new resource in storage, in bytes.
`abstract long`	`getCacheSize()`	Gets the total size of the resources currently in storage, in bytes.
`abstract long`	`getCacheLimit()`	Gets the current size limit for the cache, in bytes.
`abstract IOException`	`getException()`	Gets the exception which occurred to trigger a read or write exception event.
`abstract CacheEventListener.EvictionReason`	`getEvictionReason()`	Gets the reason for an item's eviction in eviction events.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getCacheKey
```
@Nullable() abstract CacheKey getCacheKey()
```
    Gets the cache key related to this event.
    This should be present for all events other than eviction.
  - getResourceId
```
@Nullable() abstract String getResourceId()
```
    Gets the resource ID for the cached item.
    This is present in cache hit, write success, read and write exceptions and evictions.
    It may also be present in cache miss events if an ID was found in the cache's index but theresource wasn't then found in storage.
  - getItemSize
```
 abstract long getItemSize()
```
    Gets the size of the new resource in storage, in bytes.
    This is present in write success and eviction events.
  - getCacheSize
```
 abstract long getCacheSize()
```
    Gets the total size of the resources currently in storage, in bytes.
    This is present in write success and eviction events.
  - getCacheLimit
```
 abstract long getCacheLimit()
```
    Gets the current size limit for the cache, in bytes.
    This is present in eviction events where the eviction is due to the need to trim for size.
  - getException
```
@Nullable() abstract IOException getException()
```
    Gets the exception which occurred to trigger a read or write exception event.
  - getEvictionReason
```
@Nullable() abstract CacheEventListener.EvictionReason getEvictionReason()
```
    Gets the reason for an item's eviction in eviction events.