# $redis_pool 获取redis连接池对象 例子： ```php /** * Redis decrBy 命令 */ public function testRedisDecrBy() { yield $this->redis_pool->getCoroutine()->set('key1', 10); yield $this->redis_pool->getCoroutine()->decrBy('key1', 10); $value = yield $this->redis_pool->getCoroutine()->get('key1'); $this->destory(); } ```