Spring cache (Getting started)

Spring's caching mechanism is the caching mechanism for method latitude,

This means that we do not pay attention to whether the underlying database is used and how it is accessed;

Therefore, this caching method is applicable both to the DAO layer and to the service layer .

Spring configuration file configuration:

<!--cache configuration--
<!--deprecated cache annotations-
<cache:annotation-driven cache-manager= "CacheManager"/>
<!--Spring's own Java.util.concurrent.ConcurrentHashMap-based cache manager (which is available starting from Spring3.1)-
<bean id= "CacheManager" class= "Org.springframework.cache.support.SimpleCacheManager" >
    <property name= "Caches" >
        <set>
            <bean name= "Mycache" class= "Org.springframework.cache.concurrent.ConcurrentMapCacheFactoryBean"/>
        </set>
    </property>
</bean>

The service layer example is as follows:

@Transactional (readOnly = True)
@Cacheable (value = "Mycache")
Public Jsonobject GETWFK (jsonobject params) {
    Oneob ob = new Oneob ();
    try {
        list<map<string,object>> Map = LAWASSISTANTMAPPER.GETWFK ();
        Ob.setob (map);
    }catch (Exception e) {
        E.printstacktrace ();
        Ob.setcode (500);
        Ob.setmsg ("Server Error!!! ");
        return new Jsonobject (Json.encode (ob));
    }
    Ob.setcode (200);
    Ob.setmsg ("OK");
    Logger.debug (Json.encode (ob));
    return new Jsonobject (Json.encode (ob));

}

Because of the spring-brought cache class, it only takes two steps: 1. Declared in the spring configuration file, 2. Add annotations to the service layer before the method code.

Spring cache (Getting started)