About Cache

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Forum
34

Distributed second level cache

Is it possible to configure the second level cache as distributed? The use-case: The object Person "John" is read on application node 1 and also on application node 2 to the second level caches ... cache on application node 1 has a correct data. The object Person is read from application node 2
Forum
34

Cache configuration of database file pages, query programs, query results

Are there some possibilities to configure following caches in order to keep cache data for only some important entity types and for the entire life cycle of the EntityManagerFactory. Cache of database file pages. Cache of query programs. Cache of query execution results. These caches are fully
Forum
34

JPA Level 2 Cache - app config

Hello! I would like to use selective cache for JPA Level 2 (cached in EntityManagerFactory) in one app, but no cache at all in another app. Both will be connected to the same ObjectDB server & db ... #The_cache_element_ specifies only amount of MB used for Level 2 cache, but the config is at server
Forum
34

Compiled Queries and Cache

objectdb.conf has options for query results and program cache.  (objectdb.conf > database > query-cache > results and programs, http://www.objectdb.com/java/jpa/setting/database#The_query-cache ... cache still available?   Yes, these are server/store side caches. The exact client side code doesn't affect. BoydEdmondson
Forum
34

Using of Second Level Cache

was load and the entity MyEntity1 is taken in the second level cache, the other entity types not ... list; } The 2nd level cache stores object data (byte[]) rather than live entity objects ... cache as object IDs (PK) encoded in the byte[] of a MyEntity1 instance. When you retrieve a MyEntity1
Forum
34

Working with a cleared cache

attempting to keep the L1 cache within the PersistenceManager cleared in an effort to reduce its memory ... the cache?   try { // Start the transaction m_persistenceManager ... ); // Flush the JDO cache m_persistenceManager.evictAll(); m
Issue
32

Page cache File handling produced an java.io.IOException: Negative seek offset

Page cache File handling produced an java.io.IOException: Negative seek offset
Manual
27

Entity Management Settings

: <cache ref="weak" level2="0mb ... " - reflection is used even for enhanced classes (for troubleshooting). The <cache> element <cache ref="weak" level2="0mb" /> The <cache> element specifies settings of the two cache mechanisms
Result
25

ObjectDB Object Database Features

managed by EntityManagerFactory. Configurable - minimum/maximum connections and timeout. Caching L1 entity object cache (per EntityManager). L2 shared entity data cache (per EntityManagerFactory). Database file page cache. Query program cache (for repeating queries with different arguments). Query
Result
25

ObjectDB Object Database Features [2018-10-27]

and timeout. Caching L1 entity object cache (per EntityManager). L2 shared entity data cache (per EntityManagerFactory). Database file page cache. Query program cache (for repeating queries with different arguments). Query result cache (for repeating queries with the same arguments). Many