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Hibernate 2nd cache implementation using Arcus cache

Java 100.00%

arcus-cache cache-storage hibernate help-welcome jumpin hibernate2nd-level-cache arcus arcus-cloud helpwanted

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DomainDataStorageAccess needs fallback in case of connection failure or cache command failure

Is your feature request related to a problem?
When connecting arcus cluster, a main thread is hanging

Describe the solution you'd like

When connection is hanging or failing, cachePut and cacheGet are skipped.
Timeout and retry count need to be configurable

CacheEvict on CachePut is optional property and multiple cache region entities are evicted together.

Is your feature request related to a problem? Please describe.

In some cases, a cache entity might be necessarily evicted on cache put.

Describe the solution you'd like
An cachePut operation does evict a current cache entity prior to putting the entity if exists.
The cacheEvict on cachePut is optionally executed only when configured.
The default behavior is not to not evict an entity on cachePut.

Multiple cache region entities are evicted altogether.
an entity on region A mapped by id#1
an entity on region B also mapped by id#1

When the entity of A is put, the entity of B also is evicted because region A and region B are grouped and the cache key(id#1) is identical.

Additional context

An direct db update does not update cache entities, which leads data inconsistency between db and cache storage

TTL of cache item needs to be configurable.

Is your feature request related to a problem? Please describe.
Currently TTL ( version <= 1.2.0-RELEASE) is permanent (value: 0)
No option is available except 0.

Describe the solution you'd like
TTL is configurable as a config property. but default value remains as it is now.

TTL of Lock should be set with timeout field of itself

Is your feature request related to a problem? Please describe.
Currently ttl of lock is set with a global ttl from a properties file
Hibernate sets timeout of SoftlockImpl to unlock items.
But the current feature does not unlock items with timeout set by Hibernate.

Describe the solution you'd like
In case of SoftLockImpl, HibernateArcusStorageAccess should expire a lock or set ttl to be expired immediately

Cache item(entity) is stored in json format of plain text

Is your feature request related to a problem? Please describe.
Cache items of non-plan-text is hardly readable.
Some cases may needs items to readable.

Describe the solution you'd like
Make shape of items to be configurable

Maven central release is in process with 1.0.0-RELEASE

New Project request
groupId: com.github.kims-developergroup
https://issues.sonatype.org/browse/OSSRH-64363

Assigned maven repository path: https://repo1.maven.org/maven2/com/github/kims-developergroup/hibernate-arcus

When @Cache.usage changes, casting exception is thrown

After changing "CacheConcurrencyStrategy" READ_ONLY to READ_WRITE, getting entity occurs the exception below.

Cause:

The cached entity is StandardCacheEntryImpl but current entity should be AbstractReadWriteAccess$Lockable

org.hibernate.HibernateException: Unable to perform afterTransactionCompletion callback: org.hibernate.cache.spi.entry.StandardCacheEntryImpl cannot be cast to org.hibernate.cache.spi.support.AbstractReadWriteAccess$Lockable

	at org.hibernate.engine.spi.ActionQueue$AfterTransactionCompletionProcessQueue.afterTransactionCompletion(ActionQueue.java:990)
	at org.hibernate.engine.spi.ActionQueue.afterTransactionCompletion(ActionQueue.java:513)
	at org.hibernate.internal.SessionImpl.afterTransactionCompletion(SessionImpl.java:2404)
	at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.afterTransactionCompletion(JdbcCoordinatorImpl.java:454)
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.afterCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:203)
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$400(JdbcResourceLocalTransactionCoordinatorImpl.java:40)
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:283)
	at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101)
	at hibernate.CollectionCacheTest.testCollectionCache_whenCollectionCacheIsPut_thenCollectionCacheShouldBeHitForTheNextGet(CollectionCacheTest.java:98)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.hibernate.testing.junit4.ExtendedFrameworkMethod.invokeExplosively(ExtendedFrameworkMethod.java:45)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:298)
	at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:292)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassCastException: org.hibernate.cache.spi.entry.StandardCacheEntryImpl cannot be cast to org.hibernate.cache.spi.support.AbstractReadWriteAccess$Lockable
	at org.hibernate.cache.spi.support.EntityReadWriteAccess.afterInsert(EntityReadWriteAccess.java:85)
	at org.hibernate.action.internal.EntityInsertAction.cacheAfterInsert(EntityInsertAction.java:257)
	at org.hibernate.action.internal.EntityInsertAction.doAfterTransactionCompletion(EntityInsertAction.java:239)
	at org.hibernate.engine.spi.ActionQueue$AfterTransactionCompletionProcessQueue.afterTransactionCompletion(ActionQueue.java:983)
	... 23 more

Solution:

When changing CacheConcurrencyStrategy, regionName should be modified together not to reuse same cache items

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