redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool

時間 2019-11-17

標籤 redis.clients.jedis.exceptions.jedisconnectionexception redis clients jedis exceptions jedisconnectionexception resource pool 欄目 Redis 简体版

原文原文鏈接

使用redis鏈接池，每隔一段時間就報錯java

redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool  
    at redis.clients.util.Pool.getResource(Pool.java:22)  
    at com.derbysoft.jredis.longkeytest.BorrowObject.run(BorrowObject.java:22)  
    at java.lang.Thread.run(Thread.java:662)  
Caused by: java.util.NoSuchElementException: Timeout waiting for idle object  
    at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:1134)  
    at redis.clients.util.Pool.getResource(Pool.java:20)

緣由是沒有回收資源致使
正確的作法是redis

ShardedJedis jedis = shardedJedisPool.getResource();
try {
    jedis.set(key, value);
} finally {
    shardedJedisPool.returnResource(jedis);
}

若是你用的jedis 2.4.2以及之前版本，用完以後別忘了return鏈接到資源池。apache

不過2.5.0版本以後，jedis使用了try-with-resource，jedis用完了就會自動歸還了，不用每次都本身return了。網絡

各類連接數的參數本身調一下。例如MaxTotal，MaxIdle等等~socket

若是redis server不在局域網內，可能會由於network問題致使連接超時，會拋出socket的異常，固然寫數據就也會丟失。code

connection的timeout默認是2000ms，你能夠本身調的大一些，這樣網絡慢的時候就不至於丟失數據。server