Ehcache holds cache elements in-memory/on-disk store until the defined expiration time.
We’ve defined the time-to-live (TTL) to be 15 minutes (900 seconds) in eh-cache.xml: time To Idle Seconds: Sets the time to idle for an element before it expires.
If we browse through the source code, we see that the name of the Cache Manager is actually taken from the config file, and so we should specify it there.
Cache Manager cache Manager = Cache Manager Cache Manager Builder() (1) Cache("pre Configured", Cache Configuration Cache Configuration Builder(Long.class, String.class, Resource Pools Builder.heap(10))) (2) .build(); (3) cache Manager.init(); (4) Cache my Cache = cache Manager.create Cache("my Cache", (6) Cache Configuration Cache Configuration Builder(Long.class, String.class, Resource Pools Builder.heap(10)).build()); my Cache.put(1L, "da one!
you guessed it – ALL the Cache Managers you started(or Hibernate did for you).
The problem still remains on how to actually obtain your desired Cache Manager from this list containing ALL of them.
If the sizing goes above any of these two limits, the mutative operation on the cache will be ignored.
"); (3) user Managed Cache.close(); (4) The idea is that resources related to faster storage are more rare, but are where the 'hottest' data is preferred to be.Well since today in my posts about Eh Cache I’ve always been talking and assuming of using only one Cache Manager, by specifying Singleton Eh Cache Provider as the cache provider for Hibernate.But there are situations when you would not be able(or not want to use Singleton Eh Cache Provider).Thus less-hot (less frequently used) data is moved to the more abundant but slower tiers. Cache Manager cache Manager = Cache Manager Cache Manager Builder()Cache("tiered Cache", Cache Configuration Cache Configuration Builder(Long.class, String.class, Resource Pools Resource Pools Builder() .heap(10, Entry Unit. MB)) (1) ) .build(true); cache Manager.close(); The example above allocates a very small amount of off-heap.Remember that data stored off-heap will have to be serialized and deserialized - and is thus slower than heap.