How to make sure that the Telegram bot does not duplicate messages if more than one instance is running on the server?

Question

Bots

I use pm2, in the settings it says:

{
"instances" : "max",
"exec_mode" : "cluster"
}

The bot is written using the bot-brother library.
Now when the bot replies, it replies twice. How to make sure that only one instance of the bot works with each user?

Answer 1

Not to run a copy of the same script, not intended for that?

Answer 2

Thank you. That's right.