asyncpg.exceptions._base.InterfaceError:cannot perform operation: another op

错误详细信息：

asyncpg.exceptions._base.InterfaceError: cannot perform operation: another operation is in progress

 出现错误的场景：

FastApi + asyncpg + psql数据库，因为某个业务逻辑处理时间较长，连续点击两次接口就会出现这样的错误。

出现错误的原因：
不同的请求使用同一个数据库链接

解决办法：

加锁保证同一时刻只有一个请求在进行

class RedisConnectionPool(object):
    _CONFIG_NAME = 'REDIS_CONFIG'

    def __init__(self):
        self.conn = None
        self._loop = None
        self.pool: Optional[Redis] = None
        self.app = None

    async def init_app(self, app) -> Redis:
        self.app = app
        config = app.config[self._CONFIG_NAME]
        self._loop = app.loop
        host = config["host"]
        port = config["port"]
        password = config['password']
        self.pool = await aioredis.create_redis_pool(
            f'redis://{host}:{port}',
            password=password,
            loop=self._loop
        )
        return self.pool

    def lock(self, key, timeout=30, wait_timeout=30):
        def decorator(f):
            @functools.wraps(f)
            async def decorated_function(*args, **kwargs):
                async with RedisLock(self.pool, key=key, timeout=timeout, wait_timeout=wait_timeout) as lock:
                    return await f(*args, **kwargs)
            return decorated_function
        return decorator

使用锁：

redis = RedisConnectionPool()

@redis.lock("my_lock_name")

async def test():

        pass