Hibernate L2的点火非常慢

问题描述

我有Hibernate，Spring，PostgreSQL，MongoDB，Neo4j和ElasticSearch的系统，并与EhCache一起用于Hibernate L2和Spring Cache，它运行良好。

I have system with Hibernate, Spring, PostgreSQL, MongoDB, Neo4j and ElasticSearch working with EhCache for Hibernate L2 and Spring Cache, it works well.

我测试Ignite，但是当我将Ignite用于Hibernate L2（使用Spring Cache可以快速运行）时，系统变得非常慢，我使用JProfiler来查看真正慢的东西，而我只是看到以下方法非常慢：

I'm testing Ignite but the system became extremely slow when I put Ignite for Hibernate L2 (with Spring Cache works fast), I put JProfiler to see what is really slow and I just saw the follow methods extremely slow:

org.postgresql.core.VisibleBufferedInputStream.read(byte[ ], int, int)
org.postgresql.jdbc2.AbstractJdbc2Statement.parseSql
javax.persistence.EntityManager.find

对我来说这没有多大意义。我正在使用（我进行了更改以自动为Hibernate L2创建缓存），我在1.4.0下进行了测试，问题还是一样。

This doesn't make much sense to me. I'm using Ignite 1.5.1.final-SNAPSHOT from Branch 1.5.1-2 with https://github.com/apache/ignite/pull/388 (I made a change to automatically create the caches for Hibernate L2), I tested with 1.4.0 and the problem is the same.

用于Ignite的配置：

Configuration for Ignite:

@Configuration
public class CacheConfiguration {

    @Bean
    public DynamicClassLoaderWrapper dynamicClassLoaderWrapper() {
        return new DynamicClassLoaderWrapper(this.getClass().getClassLoader());
    }

    @Bean
    @SuppressWarnings("unchecked")
    public CacheManager cacheManager() {
        IgniteConfiguration igniteConfiguration = new IgniteConfiguration();
        igniteConfiguration.setGridName("meceap-grid");
        igniteConfiguration.setClassLoader(dynamicClassLoaderWrapper());

        igniteConfiguration.setCacheConfiguration(this.createDefaultCache("br.com.bruno.model.*"),
                this.createDefaultCache("org.hibernate.cache.spi.UpdateTimestampsCache"),
                this.createDefaultCache("org.hibernate.cache.internal.StandardQueryCache"));

        SpringCacheManager springCacheManager = new SpringCacheManager();
        springCacheManager.setConfiguration(igniteConfiguration);
        springCacheManager.setDynamicCacheConfiguration(this.createDefaultCache(null));
        return springCacheManager;
    }

    private org.apache.ignite.configuration.CacheConfiguration createDefaultCache(String name) {
        org.apache.ignite.configuration.CacheConfiguration cacheConfiguration = new org.apache.ignite.configuration.CacheConfiguration();
        cacheConfiguration.setName(name);
        cacheConfiguration.setCacheMode(CacheMode.PARTITIONED);
        cacheConfiguration.setAtomicityMode(CacheAtomicityMode.ATOMIC);
        cacheConfiguration.setWriteSynchronizationMode(CacheWriteSynchronizationMode.FULL_SYNC);
        cacheConfiguration.setStatisticsEnabled(true);
        cacheConfiguration.setEvictSynchronized(true);
        return cacheConfiguration;
    }

}

public class RepositoryConfiguration {

    @Bean
    public LocalContainerEntityManagerFactoryBean meceapEntityManagerFactory() {
        LocalContainerEntityManagerFactoryBean bean = new LocalContainerEntityManagerFactoryBean();
        bean.setPersistenceUnitName(PERSISTENCE_UNIT_NAME);
        bean.setDataSource(dataSource);

        bean.getJpaPropertyMap().put("hibernate.dialect", hibernateDialect);
        bean.getJpaPropertyMap().put("hibernate.ejb.naming_strategy", NamingStrategyLowerCase.class.getCanonicalName());
        bean.getJpaPropertyMap().put("hibernate.jdbc.batch_size", 0);
        bean.getJpaPropertyMap().put("hibernate.use_sql_comments", true);
        bean.getJpaPropertyMap().put("hibernate.show_sql", false);
        bean.getJpaPropertyMap().put("org.apache.ignite.hibernate.grid_name", "meceap-grid");
        bean.getJpaPropertyMap().put("hibernate.cache.region.factory_class", HibernateRegionFactory.class.getCanonicalName());
        bean.getJpaPropertyMap().put("hibernate.cache.use_second_level_cache", true);
        bean.getJpaPropertyMap().put("hibernate.cache.use_query_cache", true);
        bean.getJpaPropertyMap().put("javax.persistence.sharedCache.mode", SharedCacheMode.ALL);
        bean.getJpaPropertyMap().put("hibernate.cache.default_cache_concurrency_strategy", "read-write");
        bean.getJpaPropertyMap().put("hibernate.generate_statistics", true);
        bean.getJpaPropertyMap().put("javax.persistence.validation.factory", validator);

        bean.setPersistenceProviderClass(HibernatePersistenceProvider.class);
        bean.setPackagesToScan("br.com.me.ceap.model");

        meceapEntityManagerFactoryRef = bean;

        return bean;
    }

}

推荐答案

似乎仍在使用EhCache区域工厂，因此实际上并未将Ignite配置为L2缓存。

It looks like EhCache region factory is still used, so Ignite is not actually configured as the L2 cache.

您应该使用Ignite的 HibernateRegionFactory 代替，有关正确配置的示例，请参考 HibernateL2CacheExample 。

You should use Ignite's HibernateRegionFactory instead, refer to HibernateL2CacheExample for example of correct configuration.

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