Java关于MyBatis缓存详解

settings>
 <!-- 打印SQL-->
 <setting name="logImpl" value="STDOUT_LOGGING" />
 <!-- 开启延迟加载 -->
 <setting name="lazyLoadingEnabled" value="true"/>
 <!-- 开启⼆级缓存 -->
 <setting name="cacheEnabled" value="true"/>
</settings>

<cache></cache>

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Account implements Serializable {
 private long id;
 private String username;
 private String password;
 private int age;
}

<dependency>
 <groupId>org.mybatis</groupId>
 <artifactId>mybatis-ehcache</artifactId>
 <version>1.0.0</version>
</dependency>
<dependency>
 <groupId>net.sf.ehcache</groupId>
 <artifactId>ehcache-core</artifactId>
 <version>2.4.3</version>
</dependency>

<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:noNamespaceSchemaLocation="../config/ehcache.xsd">
 <diskStore/>
 <defaultCache
 maxElementsInMemory="1000"
 maxElementsOnDisk="10000000"
 eternal="false"
 overflowToDisk="false"
 timeToIdleSeconds="120"
 timeToLiveSeconds="120"
 diskExpiryThreadIntervalSeconds="120"
 memoryStoreEvictionPolicy="LRU">
 </defaultCache>
</ehcache>

<settings>
 <!-- 打印SQL-->
 <setting name="logImpl" value="STDOUT_LOGGING" />
 <!-- 开启延迟加载 -->
 <setting name="lazyLoadingEnabled" value="true"/>
 <!-- 开启⼆级缓存 -->
 <setting name="cacheEnabled" value="true"/>
</settings>

<cache type="org.mybatis.caches.ehcache.EhcacheCache">
 <!-- 缓存创建之后，最后⼀次访问缓存的时间⾄缓存失效的时间间隔 -->
 <property name="timeToIdleSeconds" value="3600"/>
 <!-- 缓存⾃创建时间起⾄失效的时间间隔 -->
 <property name="timeToLiveSeconds" value="3600"/>
 <!-- 缓存回收策略，LRU表示移除近期使⽤最少的对象 -->
 <property name="memoryStoreEvictionPolicy" value="LRU"/>
</cache>