5/5/2023 0 Comments Java hibernate![]() We could also enable the logging of SQL generated by Hibernate, and invoke fooService.findOne(foo.getId()) multiple times in the test to verify that the select statement for loading Foo is printed only once (the first time), meaning that in subsequent calls, the entity instance is fetched from the cache. Here we use Ehcache API directly to verify that the .model.Foo cache isn't empty after we load a Foo instance. Int size = CacheManager.ALL_CACHE_MANAGERS.get(0) ![]() To verify that caching is working, we can write a quick test: Foo foo = new Foo() The region name is the fully qualified class name.įor example, Foo instances are stored in a cache named .model.Foo in Ehcache. Some developers consider it a good convention to add the standard annotation as well (although not required by Hibernate), so an entity class implementation might look like this: = CacheConcurrencyStrategy.READ_WRITE)įor each entity class, Hibernate will use a separate cache region to store state of instances for that class. In order to make an entity eligible for second-level caching, we'll annotate it with the Hibernate specific annotation, and specify a cache concurrency strategy. The loaded instance state is also stored in the L2 cache if it wasn't already there. Once the instance is stored in the persistence context (first-level cache), it's returned from there in all subsequent calls within the same session until the session is closed, or the instance is manually evicted from the persistence context.
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