hibernate cache

最新推荐文章于 2024-10-29 08:54:41 发布

最新推荐文章于 2024-10-29 08:54:41 发布 · 121 阅读

文章标签：

#Cache #Hibernate #SQL

本文详细介绍了Ehcache的缓存流程，包括元素的放入、查询加载、二级缓存使用及更新等核心环节，并深入探讨了如何利用查询缓存来提高数据检索效率。

Ehcache.put
     RegisteredEventListeners.notifyElementPut
cache.update(key, value)


QueryLoader.list // queryTranslator.getQuerySpaces()
     factory.getSettings().isQueryCacheEnabled() && queryParameters.isCacheable()
     listUsingQueryCache
         QueryKey.generateQueryKey  sql,parameter,firstRow,maxRow etc
             getResultFromQueryCache
                 StandardQueryCache.get // !isUpToDate(spaces, timestamp)
            doList
                 // session.get also calls the method, the query key is class#id
                 DefaultLoadEventListener.doLoad
                     loadFromSessionCache
                     loadFromSecondLevelCache
                     loadFromDatasource  // call EntityLoader.load
                 putResultInQueryCache
                     StandardQueryCache.put // id list
     listIgnoreQueryCache
            TwoPhaseLoad.initializeEntity // EntityLoader.load also calls it
                 EntityAccessStrategyAdapter.putFromLoad // entity

SessionImpl.afterTransactionCompletion
    // exec includes EntityInsertAction, Delete ... CollectionRemoveAction ...
    // update timestamp
    session.getFactory().getUpdateTimestampsCache().invalidate(exec.getPropertySpaces());

key: querySpace, propertySpace