redis连接池用法

redis连接池示例

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
public final class RedisPool {
    //服务器地址
    private static String ADDR="localhost";
    //服务器端口
    private static int PORT=6379;
    //权限认证
    private static String AUTH="testredis";
    //最大连接数
    private static int MAX_ACTIVE=20000;
    //控制pool中有多少个idle（空闲的）的jedis实例
    private static  int MAX_IDLE=3000;
    //等待可用连接的最大时间，单位毫秒，默认值为-1，表示永不超时。如果超过等待时间，则直接抛出
    private static int MAX_WAIT=10000;
    //超时时间
    private static int TIMEOUT=10000;
    //在borrow一个jedis实例时，是否提前进行validate操作；如果为true，则得到的jedis实例均是可用的；
    private static boolean TEST_ON_BORROW=true;

    private static JedisPool jedisPool=null;

    /*
     * 初始化连接池
     */
    static {
        try{
             JedisPoolConfig config = new JedisPoolConfig();
             config.setMaxTotal(MAX_ACTIVE);
             config.setMaxIdle(MAX_IDLE);
             config.setMaxWaitMillis(MAX_WAIT);
             config.setTestOnBorrow(TEST_ON_BORROW);
             jedisPool = new JedisPool(config, ADDR, PORT, TIMEOUT, AUTH);
        } catch (Exception e){
            e.printStackTrace();
        }
    }
    /*
     * 获取Jedis实例
     */
    public synchronized static Jedis getJedis(){
        try{
            if(jedisPool!=null){
                Jedis resource=jedisPool.getResource();
                return resource;
            }else {
                return null;
            }
        } catch(Exception e){
            e.printStackTrace() ;
            return null;
        }
    }
}

这里我使用了线程测试后redis连接池的最大连接数

import redis.clients.jedis.Jedis;
public class TestThread extends Thread {
    private Jedis jedis;
    private RedisPool redisPool=new RedisPool();
    private static int i = 0;
    private static int MAX=9000;

    public void setup() {
        jedis=redisPool.getJedis();
        System.out.println(jedis.ping() + " " + i++);
    }

    public void run() {
        setup();
    }

    public static void main(String[] args) {
        try {
            for (int i = 0; i < MAX; i++) {
                TestThread myThread = new TestThread();
                myThread.start();
                System.out.println("第" + i + "个线程");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}