About cache

71-80 of 200Refresh
JDO Doc
5

setDetachAllOnCommit(flag)

the cache after commit is defined by the retainValues flag. With this flag set to true, during beforeCompletion all cached instances are prepared for detachment according to the fetch plan in effect ... callback, all detachable persistent instances in the cache transition to detached; non-detachable
Issue
5

Server out of memory exceptions

on the server side became higher mainly due to increasing page cache size. I see that the test uses 4 different databases (2 large and 2 small). The default size of each page cache (per database) is 64MB, so the cache of the two large databases consumes at least 128MB (probably a little more). Other caches
Forum
4

significant performance decrease

to around 30% when the number of entities was just half of the current). We tried to optimize the cache ... ="write" /> cache="2048mb" max-threads="10" synchronized="false"/> cache results="1024mb" programs="500" />
JPA Doc
4

CacheStoreMode.REFRESH

Enum Constant javax.persistence.CacheStoreMode REFRESH Insert/update entity data into cache when read from database and when committed into database. Forces refresh of cache for items read from database. Since: JPA 2.0
JPA Doc
4

CacheStoreMode.USE

Enum Constant javax.persistence.CacheStoreMode USE Insert/update entity data into cache when read from database and when committed into database: this is the default behavior. Does not force refresh of already cached items when reading from database. Since: JPA 2.0
JDO Doc
4

evictAll(pcs)

Method javax.jdo.PersistenceManager void evictAll(   Collection pcs ) Mark a Collection of instances as no longer needed in the cache. Parameters: pcs - the Collection of instances to evict from the cache. Since: JDO 1.0 See Also: evict(Object pc)
JDO Doc
4

evictAll(pcs)

Method javax.jdo.PersistenceManager void evictAll(   Object... pcs ) Mark an array of instances as no longer needed in the cache. Parameters: pcs - the array of instances to evict from the cache. Since: JDO 1.0 See Also: evict(Object pc)
JDO Doc
4

flush()

, this method synchronizes the cache with the datastore and reports any exceptions. If an optimistic transaction is active, this method obtains a datastore connection, synchronizes the cache
JDO Doc
4

getDataStoreCache()

Method javax.jdo.PersistenceManagerFactory DataStoreCache getDataStoreCache() Return the DataStoreCache that this factory uses for controlling a second-level cache. If this factory does not use a second-level cache, the returned instance does nothing. This method never returns null. Returns: the DataStoreCache Since: JDO 2.0
JDO Doc
4

hashCode()

Method javax.jdo.identity.SingleFieldIdentity int hashCode() Return the cached hash code. Returns: the cached hash code. Since: JDO 1.0