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