最近在做LinkNemo的调优工作，其中考虑引入redis，用来替代现有的队列/缓存机制。

这里的redis客户端有两种待选，jedis和redisson。这边项目用的是redisson，用着感觉还可以，所以这里也考虑用redisson。

以上是背景。

开始：

1、添加redisson的maven依赖：

<!-- redisson --><dependency>
   <groupId>org.redisson</groupId>
   <artifactId>redisson</artifactId>
   <version>3.5.7</version>
</dependency>

2、添加redisson配置：

spring:
  redis:
    host: 10.1.10.116
    port: 6379
    password: ******
    jedis:
      pool:
        max-active: 500
        max-idle: 1000
        max-wait: 6000ms
        min-idle: 4

3、添加redisson配置类：

import org.redisson.Redisson;
import org.redisson.api.RedissonClient;
import org.redisson.config.Config;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/** 
 * @author: Nemo 
 * @date: 2018/12/28. 
 */
@Configuration
public class RedissonConfig {

    @Value("${spring.redis.host}")
    private String host;

    @Value("${spring.redis.port}")
    private String port;

    @Value("${spring.redis.password}")
    private String password;

    @Bean 
    public RedissonClient getRedisson(){

        Config config = new Config();
        config.useSingleServer().setAddress("redis://" + host + ":" + port).setPassword(password);
        //添加主从配置        
        //config.useMasterSlaveServers().setMasterAddress("").setPassword("").addSlaveAddress(new String[]{"",""});        
        return Redisson.create(config);
    }


}

4、封装一个redisson操作客户端，方便操作：

import org.redisson.api.*;
import org.redisson.config.Config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.io.IOException;

/**
 * @author: Nemo
 * @date: 2018/12/28.
 */
@Service
public class RedissonService {

    @Autowired
    private RedissonClient redissonClient;

    public void getRedissonClient() throws IOException {
        Config config = redissonClient.getConfig();
        System.out.println(config.toJSON().toString());
    }

    /**`
     * 获取字符串对象
     *
     * @param objectName
     * @return
     */
    public <T> RBucket<T> getRBucket(String objectName) {
        RBucket<T> bucket = redissonClient.getBucket(objectName);
        return bucket;
    }

    /**
     * 获取Map对象
     *
     * @param objectName
     * @return
     */
    public <K, V> RMap<K, V> getRMap(String objectName) {
        RMap<K, V> map = redissonClient.getMap(objectName);
        return map;
    }

    /**
     * 获取有序集合
     *
     * @param objectName
     * @return
     */
    public <V> RSortedSet<V> getRSortedSet(String objectName) {
        RSortedSet<V> sortedSet = redissonClient.getSortedSet(objectName);
        return sortedSet;
    }

    /**
     * 获取集合
     *
     * @param objectName
     * @return
     */
    public <V> RSet<V> getRSet(String objectName) {
        RSet<V> rSet = redissonClient.getSet(objectName);
        return rSet;
    }

    /**
     * 获取列表
     *
     * @param objectName
     * @return
     */
    public <V> RList<V> getRList(String objectName) {
        RList<V> rList = redissonClient.getList(objectName);
        return rList;
    }

    /**
     * 获取队列
     *
     * @param objectName
     * @return
     */
    public <V> RQueue<V> getRQueue(String objectName) {
        RQueue<V> rQueue = redissonClient.getQueue(objectName);
        redissonClient.getBlockingQueue(objectName);
        return rQueue;
    }

    /**
     * 获取队列
     *
     * @param objectName
     * @return
     */
    public <V> RBlockingQueue<V> getBlockingQueue(String objectName) {
        return redissonClient.getBlockingQueue(objectName);
    }

    /**
     * 获取双端队列
     *
     * @param objectName
     * @return
     */
    public <V> RDeque<V> getRDeque(String objectName) {
        RDeque<V> rDeque = redissonClient.getDeque(objectName);
        return rDeque;
    }


    /**
     * 获取锁
     *
     * @param objectName
     * @return
     */
    public RLock getRLock(String objectName) {
        RLock rLock = redissonClient.getLock(objectName);
        return rLock;
    }

    /**
     * 获取读取锁
     *
     * @param objectName
     * @return
     */
    public RReadWriteLock getRWLock(String objectName) {
        RReadWriteLock rwlock = redissonClient.getReadWriteLock(objectName);
        return rwlock;
    }

    /**
     * 获取原子数
     *
     * @param objectName
     * @return
     */
    public RAtomicLong getRAtomicLong(String objectName) {
        RAtomicLong rAtomicLong = redissonClient.getAtomicLong(objectName);
        return rAtomicLong;
    }

    /**
     * 获取记数锁
     *
     * @param objectName
     * @return
     */
    public RCountDownLatch getRCountDownLatch(String objectName) {
        RCountDownLatch rCountDownLatch = redissonClient.getCountDownLatch(objectName);
        return rCountDownLatch;
    }

    /**
     * 获取消息的Topic
     *
     * @param objectName
     * @return
     */
    public <M> RTopic<M> getRTopic(String objectName) {
        RTopic<M> rTopic = redissonClient.getTopic(objectName);
        return rTopic;
    }

}

大体就是这样了。通过这个封装的客户端可以对redis做一些快捷的操作。

接下来抽空再记录下原有消息队列的改造。