Spring Boot整合ehcache3.0 缓存

Spring Boot整合ehcache3.0以上缓存

1、题记

目前市面上大多数文章都是ehcache2.0的版本，由于ehcache3.0改动较大，原来的配置方式已经不使用了，故小小研究了一番，笔以记之。

2、 先配置Spring boot

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany</groupId>
<artifactId>ehcache3-jsr107-spring-boot</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>ehcache3-jsr107-spring-boot</name>

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId> <!--parent project to use spring boot -->
<version>1.5.8.RELEASE</version>
</parent>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>

<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId> <!--Starter for using Spring Framework's caching support-->
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId> <!-- starter for using Spring MVC -->
</dependency>
</dependencies>

<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<jvmArguments>-Xmx64m -XX:MaxDirectMemorySize=512m</jvmArguments>
</configuration>
</plugin>
</plugins>
</build>
</project>

添加我们今天的主角：

<dependency>
<groupId>javax.cache</groupId> <!-- JSR-107 API-->
<artifactId>cache-api</artifactId>
</dependency>
<dependency>
<groupId>org.ehcache</groupId>
<artifactId>ehcache</artifactId>
<version>3.4.0</version>
</dependency>

cache-api也必须要引入，因为目前ehcache遵循jsr-107规范，所以必须引入

包就引入完毕了，看配置文件

3、ehcache配置文件

<config
xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
xmlns='http://www.ehcache.org/v3'
xmlns:jsr107='http://www.ehcache.org/v3/jsr107'>

<service>
<jsr107:defaults>
<jsr107:cache name="people" template="heap-cache"/>
</jsr107:defaults>
</service>

<cache-template name="heap-cache">
<listeners>
<listener>
<class>org.vrzart.com.ehcache.EventLogger</class>
<event-firing-mode>ASYNCHRONOUS</event-firing-mode>
<event-ordering-mode>UNORDERED</event-ordering-mode>
<events-to-fire-on>CREATED</events-to-fire-on>
<events-to-fire-on>UPDATED</events-to-fire-on>
<events-to-fire-on>EXPIRED</events-to-fire-on>
<events-to-fire-on>REMOVED</events-to-fire-on>
<events-to-fire-on>EVICTED</events-to-fire-on>
</listener>
</listeners>
<resources>
<heap unit="entries">2000</heap>
<offheap unit="MB">100</offheap> <!-- unit of measure is case sensitive! -->
</resources>
</cache-template>

<cache alias="peopleCache" uses-template="heap-cache">
<expiry>
<ttl unit="seconds">600</ttl>
</expiry>
</cache>

</config>

配置spring 配置文件 application.properties

spring.cache.jcache.config=classpath:ehcache.xml  ###attention，这里是jcache
server.port=8090

4、使用代码

@Component
@CacheDefaults(cacheName = "peopleCache")
public class PersonService
{
private static final Logger LOGGER = LoggerFactory.getLogger(PersonService.class);

@CacheResult
public Person getPerson(int ssn)
{
LOGGER.info("ssn " + ssn + " not found in cache. TimeStamp: {}", new Date());

switch (ssn)
{
case 123456789:
return new Person(ssn, "Geoff", "Gibson");
case 987654321:
return new Person(ssn, "Cory", "Beck");
default:
return new Person(ssn,"John","Doe");
}
}

}

使用的jsr-107标准注解，没有使用Spring的一些注解（如cachable等）

5、测试

启动SpringJsr107Ehcache3Application类，浏览器输入[这个地址

]( http://localhost:8090/person/987654321)

多刷新自己就会发现从缓存中拿数据了

6、 代码下载

这里，大家可以自己下载下来跑一下，体验一下