Caused by: redis.clients.jedis.exceptions.JedisException: Could not get a resource from the pool
at redis.clients.util.Pool.getResource(Pool.java:51)
at redis.clients.jedis.JedisPool.getResource(JedisPool.java:226)
at redis.clients.jedis.JedisPool.getResource(JedisPool.java:16)
at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.fetchJedisConnector(JedisConnectionFactory.java:194)
... 71 common frames omitted
前几天在线上碰到了一个奇怪的问题，jedis 突然无法从连接池取到资源，经过排查发现是因为使用分布式锁的时候,没有释放资源
redisTemplate 和 jedis 不同
redisTemplate 自己实现了资源的释放，不需要像jedis一样手动释放
public boolean setNX(final String key, final String value) throws RedisException {
return redisTemplate.execute(new RedisCallback<Boolean>() {
@Override
public Boolean doInRedis(RedisConnection redisConnection) throws DataAccessException {
return redisConnection.setNX(key.getBytes(), value.getBytes());
}
});
}
所以实现分布式锁的时候需要调用redisTemplate.execute 让 redisTemplate 帮我们释放资源，具体的可以看redisTemplate 的源码。
