How to add changes to the bot's functionality in production?

Asked the customer to add functionality to his bot, he has a lot of people use it, and often when the production changes, everything falls down and he stops responding to all in case I made a mistake.
So: how to test bot not in production? How to be in this situation? So the first change I saw, and only then if all is good, move to production? (VK callback api)
June 8th 19 at 16:49
2 answers
June 8th 19 at 16:51
emulate callback requests samopisnye scripts
to proxy the real callback requests on a particular host with the test version
June 8th 19 at 16:53
Blue Green Development

Find more questions by tags VKontakteWeb Development