Spring-Boot之Redis基础

Spring-Boot之Redis基础

准备

Redis下载地址：github.com/MSOpenTech/redis/releases

Redis数据库的默认端口号是 6379

开启Redis服务：cmd 命令窗口进入到redis目录下输入：

redis-server.exe redis.windows.conf

整合spring-boot 1.5.6

1.添加pom依赖

<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-cache -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-cache</artifactId>
</dependency>
<!--
https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-redis
-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
    <version>1.4.3.RELEASE</version>
</dependency>

2.application.yml添加redis配置 注：redis配置在spring节点下

#redis配置
redis:
  host: 127.0.0.1
  port: 6379
  pool:
    max-idle: 20
    min-idle: 1
    max-active: 20
    max-wait: 6000
  database: 0

3.添加RedisConfiguration配置类

/**
 * @ClassName RedisConfiguration
 * @Description <redis缓存框架配置类>
 * @Author zhaiyt
 * @Date 2018/8/30 19:42
 * @Version 1.0
 */
@Configuration
@EnableCaching
public class RedisConfiguration extends CachingConfigurerSupport {

    private final Logger logger = LoggerFactory.getLogger(RedisConfiguration.class);

    /**
     * @return org.springframework.cache.CacheManager
     * @Description <采用RedisCacheManager作为缓存管理器>
     * @Author zhaiyt
     * @Date 19:46 2018/8/30
     * @Param [redisTemplate]
     **/
    @Bean
    public CacheManager cacheManager(RedisTemplate redisTemplate) {
        return new RedisCacheManager(redisTemplate);
    }

    /**
     * @return org.springframework.cache.interceptor.KeyGenerator
     * @Description <自定义生成key>
     * @Author zhaiyt
     * @Date 20:20 2018/8/30
     * @Param []
     **/
    @Override
    public KeyGenerator keyGenerator() {
        return new KeyGenerator() {
            @Override
            public Object generate(Object o, Method method, Object... objects) {
                StringBuilder sb = new StringBuilder();
                sb.append(o.getClass().getSimpleName());
                sb.append(method.getName());
                for (Object arg : objects) {
                    sb.append(arg.toString());
                }
                logger.info("自定义Redis key :" + sb.toString());
                return sb.toString();
            }
        };
    }
}

4.添加必要注解

Service类上：@CacheConfig(cacheNames = "user")

方法上：@Cacheable

Test：

一定要将SQL打印到控制台，否则无法验证缓存是否生效

常用Redis客户端的简单命令：

Del key 删除指定key的值

Keys * 查看数据库所有key

Flushall 清空所有数据库

Quit 退出客户端连接