lettuce--Advanced Redis client

redis官方提供的java client：

git地址：https://github.com/mp911de/lettuce
Advanced Redis client for thread-safe sync, async, and reactive usage. Supports Cluster, Sentinel, Pipelining, and codecs.http://redis.paluch.biz

Introduction

Lettuce is a scalable thread-safe Redis client for synchronous, asynchronous and reactive usage. Multiple threads may share one connection if they avoid blocking and transactional operations such as BLPOP and MULTI/EXEC. lettuce is built with netty. Supports advanced Redis features such as Sentinel, Cluster, Pipelining, Auto-Reconnect and Redis data models.

This version of lettuce has been tested against Redis and 3.0.

• lettuce 3.x works with Java 6, 7 and 8, lettuce 4.x requires Java 8
• synchronous, asynchronous and reactive usage
• Redis Sentinel
• Redis Cluster
• SSL and Unix Domain Socket connections
• Streaming API
• CDI and Spring integration
• Codecs (for UTF8/bit/JSON etc. representation of your data)
• multiple Command Interfaces

几个常见的使用方法：

1. 连接单机

package com.lambdaworks.examples;

import com.lambdaworks.redis.RedisClient;
import com.lambdaworks.redis.RedisConnection;
import com.lambdaworks.redis.RedisURI;

/**
 * @author <a href="mailto:mpaluch@paluch.biz">Mark Paluch</a>
 * @since 18.06.15 09:17
 */
public class ConnectToRedis {

    public static void main(String[] args) {
        // Syntax: redis://[password@]host[:port][/databaseNumber]
        RedisClient redisClient = new RedisClient(RedisURI.create("redis://password@localhost:6379/0"));
        RedisConnection<String, String> connection = redisClient.connect();

        System.out.println("Connected to Redis");

        connection.close();
        redisClient.shutdown();
    }
}

2. 连接集群

package com.lambdaworks.examples;

import com.lambdaworks.redis.RedisURI;
import com.lambdaworks.redis.cluster.RedisAdvancedClusterConnection;
import com.lambdaworks.redis.cluster.RedisClusterClient;

/**
 * @author <a href="mailto:mpaluch@paluch.biz">Mark Paluch</a>
 * @since 18.06.15 09:17
 */
public class ConnectToRedisCluster {

    public static void main(String[] args) {
        // Syntax: redis://[password@]host[:port]
        RedisClusterClient redisClient = new RedisClusterClient(RedisURI.create("redis://password@localhost:7379"));
        RedisAdvancedClusterConnection<String, String> connection = redisClient.connectCluster();

        System.out.println("Connected to Redis");

        connection.close();
        redisClient.shutdown();
    }
}

3. 连接sentinel

package com.lambdaworks.examples;

import com.lambdaworks.redis.*;

/**
 * @author <a href="mailto:mpaluch@paluch.biz">Mark Paluch</a>
 * @since 18.06.15 09:17
 */
public class ConnectToRedisUsingRedisSentinel {

    public static void main(String[] args) {
        // Syntax: redis-sentinel://[password@]host[:port][,host2[:port2]][/databaseNumber]#sentinelMasterId
        RedisClient redisClient = new RedisClient(
                RedisURI.create("redis-sentinel://localhost:26379,localhost:26380/0#mymaster"));
        RedisConnection<String, String> connection = redisClient.connect();

        System.out.println("Connected to Redis using Redis Sentinel");

        connection.close();
        redisClient.shutdown();
    }
}

4.安全的连接

package com.lambdaworks.examples;

import com.lambdaworks.redis.*;

/**
 * @author <a href="mailto:mpaluch@paluch.biz">Mark Paluch</a>
 * @since 18.06.15 09:17
 */
public class ConnectToRedisSSL {

    public static void main(String[] args) {
        // Syntax: rediss://[password@]host[:port][/databaseNumber]
        // Adopt the port to the stunnel port in front of your Redis instance
        RedisClient redisClient = new RedisClient(RedisURI.create("rediss://password@localhost:6443/0"));
        RedisConnection<String, String> connection = redisClient.connect();

        System.out.println("Connected to Redis using SSL");

        connection.close();
        redisClient.shutdown();
    }
}

5. spring集成

package com.lambdaworks.examples;

import com.lambdaworks.redis.*;
import org.springframework.beans.factory.annotation.Autowired;

/**
 * @author <a href="mailto:mpaluch@paluch.biz">Mark Paluch</a>
 * @since 18.06.15 09:31
 */
public class MySpringBean {

    private RedisClient redisClient;

    @Autowired
    public void setRedisClient(RedisClient redisClient) {
        this.redisClient = redisClient;
    }

    public String ping() {

        RedisConnection<String, String> connection = redisClient.connect();
        String result = connection.ping();
        connection.close();
        return result;
    }
}

使用代码如下：

package com.lambdaworks.examples;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.lambdaworks.redis.RedisClient;
import com.lambdaworks.redis.RedisConnection;

/**
 * @author <a href="mailto:mpaluch@paluch.biz">Mark Paluch</a>
 * @since 18.06.15 09:17
 */
public class SpringExample {

    public static void main(String[] args) {

        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
                "com/lambdaworks/examples/SpringTest-context.xml");

        RedisClient client = context.getBean(RedisClient.class);

        RedisConnection<String, String> connection = client.connect();
        System.out.println("PING: " + connection.ping());
        connection.close();

        MySpringBean mySpringBean = context.getBean(MySpringBean.class);
        System.out.println("PING: " + mySpringBean.ping());

        context.close();
    }

}

参考文献：

【1】https://github.com/mp911de/lettuce

【2】http://redis.paluch.biz