About cache

release

2.5.2

... count" bug ( issue #83 ). Fixed a page cache purge deadlock ( issue #85 ). Fixed handling ;drop in ... Fixed retrieval with pessimistic lock to bypass cache and to force refresh. Version 2.3.1 Added ...

 
api-jdo

javax.jdo.identity.ByteIdentity

This class is for identity with a single byte field.(Class of JDO)

 
api-jdo

evict(pc)

Mark an instance as no longer needed in the cache.(Method of javax.jdo.PersistenceManager)

 
api-jdo

javax.jdo.identity.LongIdentity

This class is for identity with a single long field.(Class of JDO)

 
api-jdo

javax.jdo.identity.ShortIdentity

This class is for identity with a single short field.(Class of JDO)

 
api-jdo

javax.jdo.spi.StateManager

This interface is the point of contact between managed instances of PersistenceCapable classes and the JDO implementation.(Interface of JDO)

 
api-jdo

makeNontransactional(pc)

Make an instance non-transactional after commit.(Method of javax.jdo.PersistenceManager)

 
api-jdo

setDetachAllOnCommit(flag)

Sets the detachAllOnCommit setting.(Method of javax.jdo.PersistenceManager)

 
release

2.5.1

... count" bug ( issue #83 ). Fixed a page cache purge deadlock ( issue #85 ). Fixed handling ;drop in ... Fixed retrieval with pessimistic lock to bypass cache and to force refresh. Version 2.3.1 Added ...

 
forum_thread

Occasionally slow requests in load testing

We are running load testing against objectdb version 2.3.7_18. The performance is generally OK, however there are quite a few "spikes" in the performance where we are getting a lot of very slow response times from the DB, around 10 - 15 seconds. Looking at the DB server process with AppDynamics we can see that most of the requests get stuck in one of 2 places: com.objectdb.o.PGC:w: line number 232 com.objectdb.o.LFL:U: line number 1068 Please see the attached callgraph examples for full stack trace examples. ... = "true" /> <processing cache = "8mb" max-threads = "400" /> <query-cache results = "8mb" programs = "500" /> ... "false" reflection = "warning" /> <cache ref = "weak" level2 = "0" /> <persist ...