About cache

81-90 of 200Refresh
Forum
5

Index causes increased memory usage

is there a data structure stored in memory that assists in searching on indexes?  Are they cached in any way ... . Thanks in advance. There is no special cache for indexes. Pages that contain indexes are cached in the page cache, exactly as pages that contain data. Try analyzing a heap dump and post information
JDO Doc
5

isLoaded(pc, field)

Method javax.jdo.spi.StateManager boolean isLoaded(   PersistenceCapable pc,   int field ) Return true if the field is cached in the calling instance. Parameters: pc - the calling PersistenceCapable instance field - the field number Returns: whether the field is cached in the calling instance Since: JDO 1.0
JDO Doc
5

setIgnoreCache(ignoreCache)

entirely in the back end, instead of in the cache. If this flag is set to true, an implementation might be able to optimize the query execution by ignoring changed values in the cache. For optimistic
JDO Doc
5

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
JPA Doc
5

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
5

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
5

javax.jdo.Transaction

control should be used for the current transaction, whether instances may hold values in the cache outside transactions, and whether values should be retained in the cache after transaction completion
JDO Doc
5

javax.jdo.annotations.Persistent

" and "property". Since: JDO 2.1 String cacheable Whether this field/property is cacheable in a Level2 cache. Whether this field/property is cacheable in a Level2 cache. Default value: "true" Since: JDO 2.2
JDO Doc
5

javax.jdo.annotations.PersistenceCapable

javax.jdo.annotations Annotation PersistenceCapable Target: Classes Annotation for whether the class or interface is persistence-capable. Since: JDO 2.1 String cacheable Whether this class is cacheable in a Level2 cache. Whether this class is cacheable in a Level2 cache. Default value: "true
Issue
5

Blocked by find

further information. The stack trace is related to dilution of pages from the page cache ... relevant stack traces may indicate an infinite loop in purging pages from the cache, i.e. #1 and #3 ... .service.ServiceRunner.run(Unknown Source) I suspect that somehow a list of cached pages contains