EHCACHE Spring Annotations Core framework in Java Library analysis

EHCACHE Spring Annotations Core framework in Java Library analysis EHCACHE is an open source Java cache framework to provide high -performance object cache solutions.EHCACHE Spring Annotations Core is one of the key components used by the EHCACHE and Spring framework. It provides a convenient way to use the EHCACHE cache annotation in Spring applications. The core principle of the EHCACACHE Spring Annotions Core is to achieve automated processing of caching solutions by combining Spring AOP (facing -oriented programming) and EHCACHE.It is called by interception and processing the cache logic based on the configuration of the cache annotation.Below we will analyze this process in detail. First, we need to enable EHCACHE and EHCACHE Spring Annitations Core in the Spring configuration file.This usually involves configuration EHCACHE cache manager and cache annotation processor.The following is a spring configuration file of an example: <bean id="ehcacheManager" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"> <property name="configLocation" value="classpath:ehcache.xml" /> </bean> <bean id="cacheInterceptor" class="org.springframework.cache.interceptor.CacheInterceptor"> <property name="cacheManager" ref="ehcacheManager" /> </bean> <bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator" /> <bean class="org.springframework.cache.annotation.AnnotationCacheOperationSource" /> <aop:config> <aop:advisor advice-ref="cacheInterceptor" pointcut="@annotation(org.springframework.cache.annotation.Cacheable)" /> </aop:config> In the above configuration, we first declare an EHCACHE cache manager and specify an EHCACHE.XML file as a cache configuration.Then, we created a Cacheinterceptor Bean to inject the EHCACHE cache manager as its cacheManager. Next, we create an example of the Java class using EHCACHE Spring Annotions Core: import org.springframework.cache.annotation.Cacheable; import org.springframework.stereotype.Service; @Service public class UserService { @Cacheable(value = "users", key = "#id") public String getUserById(int id) { System.out.println("Fetching user from database..."); return "User" + id; } } In the above example, we used @cacheable annotations to identify the getuserByid method to be cached.We specify the cache name "Users" and the ID parameter used by the method as the cache key. When we call the getuserByid method, the EHCACHE Spring Annotations Core will first check whether there is a cache item that matches the specified key in the cache.If you exist, return the slowdown directly without executing the method.If there is no corresponding value in the cache, call the method body and store the method return value to the cache for next use. In summary, the technical principles of EHCACHE SPRING AnNotations Core are mainly implemented based on Spring Aop and EHCACHE.It uses AOP to perform the corresponding logic before and after the method calls to achieve cache automated processing, which greatly simplifies the development process of cache operation. It is hoped that this article will help the technical principles of EHCACHE Spring Annotations Core framework in the Java library.