Python 我的discord.py bot总是与Heroku上的MySQL数据库失去连接

所以，我在Heroku上托管的机器人有问题。事实上，我的机器人管理着我用MySQL创建的一个级别系统。我的系统似乎工作得很好，但是，只有在启动bot后几分钟。在此期间，所有命令都在工作。至少在我的bot启动5分钟后，与数据库相关的命令不再工作。写入命令时，日志会写入以下内容：

2020-10-08T21:51:00.344273+00:00 app[worker.1]: Ignoring exception in on_message
2020-10-08T21:51:00.346163+00:00 app[worker.1]: Traceback (most recent call last):
2020-10-08T21:51:00.346212+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/discord/client.py", line 333, in _run_event
2020-10-08T21:51:00.346213+00:00 app[worker.1]: await coro(*args, **kwargs)
2020-10-08T21:51:00.346215+00:00 app[worker.1]: File "pabBot.py", line 96, in on_message
2020-10-08T21:51:00.346217+00:00 app[worker.1]: await upgrade_level(message.author, message)
2020-10-08T21:51:00.346236+00:00 app[worker.1]: File "pabBot.py", line 19, in upgrade_level
2020-10-08T21:51:00.346238+00:00 app[worker.1]: cursor.execute("SELECT exp, lvl, exp_time FROM level_users WHERE id=%s;", (user.id, ))
2020-10-08T21:51:00.346241+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/mysql/connector/cursor.py", line 551, in execute
2020-10-08T21:51:00.346241+00:00 app[worker.1]: self._handle_result(self._connection.cmd_query(stmt))
2020-10-08T21:51:00.346262+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/mysql/connector/connection.py", line 490, in cmd_query
2020-10-08T21:51:00.346263+00:00 app[worker.1]: result = self._handle_result(self._send_cmd(ServerCmd.QUERY, query))
2020-10-08T21:51:00.346281+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/mysql/connector/connection.py", line 267, in _send_cmd
2020-10-08T21:51:00.346281+00:00 app[worker.1]: return self._socket.recv()
2020-10-08T21:51:00.346300+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/mysql/connector/network.py", line 243, in recv_plain
2020-10-08T21:51:00.346300+00:00 app[worker.1]: raise errors.InterfaceError(errno=2013)
2020-10-08T21:51:00.346325+00:00 app[worker.1]: mysql.connector.errors.InterfaceError: 2013: Lost connection to MySQL server during query
2020-10-08T21:51:00.346399+00:00 app[worker.1]: Ignoring exception in command level:
2020-10-08T21:51:00.347478+00:00 app[worker.1]: Traceback (most recent call last):
2020-10-08T21:51:00.347541+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/discord/ext/commands/core.py", line 85, in wrapped
2020-10-08T21:51:00.347541+00:00 app[worker.1]: ret = await coro(*args, **kwargs)
2020-10-08T21:51:00.347557+00:00 app[worker.1]: File "pabBot.py", line 168, in level
2020-10-08T21:51:00.347557+00:00 app[worker.1]: cursor.execute("SELECT exp, lvl FROM level_users WHERE id=%s", (user.id, ))
2020-10-08T21:51:00.347572+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/mysql/connector/cursor.py", line 551, in execute
2020-10-08T21:51:00.347572+00:00 app[worker.1]: self._handle_result(self._connection.cmd_query(stmt))
2020-10-08T21:51:00.347574+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/mysql/connector/connection.py", line 490, in cmd_query
2020-10-08T21:51:00.347574+00:00 app[worker.1]: result = self._handle_result(self._send_cmd(ServerCmd.QUERY, query))
2020-10-08T21:51:00.347591+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/mysql/connector/connection.py", line 267, in _send_cmd
2020-10-08T21:51:00.347591+00:00 app[worker.1]: return self._socket.recv()
2020-10-08T21:51:00.347594+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/mysql/connector/network.py", line 243, in recv_plain
2020-10-08T21:51:00.347595+00:00 app[worker.1]: raise errors.InterfaceError(errno=2013)
2020-10-08T21:51:00.347622+00:00 app[worker.1]: mysql.connector.errors.InterfaceError: 2013: Lost connection to MySQL server during query
2020-10-08T21:51:00.347625+00:00 app[worker.1]:
2020-10-08T21:51:00.347625+00:00 app[worker.1]: The above exception was the direct cause of the following exception:
2020-10-08T21:51:00.347625+00:00 app[worker.1]:
2020-10-08T21:51:00.347641+00:00 app[worker.1]: Traceback (most recent call last):
2020-10-08T21:51:00.347669+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/discord/ext/commands/bot.py", line 903, in invoke
2020-10-08T21:51:00.347669+00:00 app[worker.1]: await ctx.command.invoke(ctx)
2020-10-08T21:51:00.347688+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/discord/ext/commands/core.py", line 859, in invoke
2020-10-08T21:51:00.347688+00:00 app[worker.1]: await injected(*ctx.args, **ctx.kwargs)
2020-10-08T21:51:00.347709+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/discord/ext/commands/core.py", line 94, in wrapped
2020-10-08T21:51:00.347709+00:00 app[worker.1]: raise CommandInvokeError(exc) from exc
2020-10-08T21:51:00.347734+00:00 app[worker.1]: discord.ext.commands.errors.CommandInvokeError: Command raised an exception: InterfaceError: 2013: Lost connection to MySQL server during query

以下是我的requirements.txt：

当然，我注意到错误是：

mysql.connector.errors.InterfaceError:2013:查询期间与mysql服务器的连接中断

我一直在寻找关于这个错误的信息，但我并没有真正得到它。 我仍然不知道这个错误是服务器端错误，还是客户端错误，或者是因为我的代码。有关信息，我的数据库位于remotemysql.com上。 此外，我尝试在本地重现错误，它也能工作。所以，我不认为这个错误来自Heroku

我的代码非常大，所以我不认为完整地发送它是一个好主意，但我有一些功能可以让我检查我的级别，其他人的级别，并制作排行榜

如果你们知道我的机器人为什么不工作以及错误是什么，我很乐意接受你们的信息！另外，如果你需要更多的细节，我会寄给你

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（对不起，我英语不好，我是法国人。^’

又是我。。事实证明，我找到了错误的来源，做了很多测试，结果发现我愚蠢地忘记了在命令结束时关闭连接，并在编写新命令时重新连接连接

因此，我想为这个完全不必要的问题道歉，并感谢那些看到它的人，以及那些试图帮助我的人

（如果你还有其他建议，我很乐意采纳！）

再见

discord.py
dnspython==1.16.0
mysql-connector