Spring Boot + JPA2 + Hibernate - 启用二级缓存

问题描述

我使用带有 JPA2 的 Spring Boot 1.2.5 来注释实体(并且休眠作为底层 JPA 实现).

I'm using Spring Boot 1.2.5 with JPA2 to annotate entities (and hibernate as underlaying JPA implementation).

我想在那个设置中使用二级缓存，所以实体用 @javax.persistence.Cacheable

I wanted to use second level cache in that setup, so entities were annotated with @javax.persistence.Cacheable

我还在 application.properties 中添加了以下内容:

I also added following in application.properties:

spring.jpa.properties.hibernate.cache.use_second_level_cache=true
spring.jpa.properties.hibernate.cache.use_query_cache=true
spring.jpa.properties.hibernate.cache.region.factory_class=org.hibernate.cache.ehcache.EhCacheRegionFactory

在启动 hibernate 期间抱怨缺少 EhCacheRegionFactory 所以我也把它添加到 pom:

During bootup hibernate complained about lack of EhCacheRegionFactory so I also added this to pom:

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-ehcache</artifactId>
</dependency>

但是像 entityManager.find(Clazz.class, pk) 这样的查询仍然会触发数据库查询，而不是使用缓存数据.

But still queries like entityManager.find(Clazz.class, pk) are firing DB query instead of using cached data.

知道缺少什么吗?

推荐答案

经过更多的挖掘，我在 application.properties 中遗漏了什么:

Well after some more digging here's what I was missing in application.properties:

spring.jpa.properties.javax.persistence.sharedCache.mode=ALL

希望对某人有帮助:)

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