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Jedis(Java+Redis) Pool的使用
今天试了一下Jedis里连接池JedisPool的的使用。代码如下：
package com.myapp.jedis.pooldemo; import redis.clients.jedis.Jedis; import redis.clients.jedis.JedisPool; import redis.clients.jedis.JedisPoolConfig; /** * Created by baidu on 16/10/18. */ public class TestPool { private static JedisPool pool = null; public static JedisPool getPool() { if (pool == null) { JedisPoolConfig config = new JedisPoolConfig(); config.setMaxTotal(500); config.setMaxIdle(5); config.setMaxWaitMillis(1000*10); //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； config.setTestOnBorrow(true); //new JedisPool(config, ADDR, PORT, TIMEOUT, AUTH); pool = new JedisPool(config, "[ip]", 8379, 10000, "[auth]"); } return pool; } public synchronized static Jedis getResource() { if (pool == null) { pool = getPool(); } return pool.getResource(); } // 返还到连接池 // Deprecated // 换成用完之后, redis.close() /* public static void returnResource(Jedis redis) { if (redis != null) { pool.returnResource(redis); } } */ public static void main(String[] args) { Jedis redis = null; int loop = 1; while (loop < 20) { try { long start = System.currentTimeMillis(); redis = getResource(); redis.set("k1", "v1"); String ret = redis.get("k1"); long end = System.currentTimeMillis(); System.out.printf("Get ret from redis: %s with %d millis\n", ret, end-start); } finally { if (redis != null) { redis.close(); } } loop++; } } }
其中，有个函数returnResource已经deprecated了，现在Jedis的close方法重写了，用Jedis.close来释放资源。
跑了20次，运行结果如下：
Get ret from redis: v1 with 564 millis Get ret from redis: v1 with 235 millis Get ret from redis: v1 with 225 millis Get ret from redis: v1 with 214 millis Get ret from redis: v1 with 210 millis Get ret from redis: v1 with 232 millis Get ret from redis: v1 with 209 millis Get ret from redis: v1 with 211 millis Get ret from redis: v1 with 239 millis Get ret from redis: v1 with 207 millis Get ret from redis: v1 with 215 millis Get ret from redis: v1 with 223 millis Get ret from redis: v1 with 291 millis Get ret from redis: v1 with 220 millis Get ret from redis: v1 with 214 millis Get ret from redis: v1 with 219 millis Get ret from redis: v1 with 257 millis Get ret from redis: v1 with 214 millis Get ret from redis: v1 with 211 millis Process finished with exit code 0
可以看出，第一次500多毫秒，之后都是200多毫秒，速度有提高。
Jedis(Java+Redis) Pool的使用
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