Is there a regulation for making changes to the production server (through the repository and the test server)?

Question

git

How often changes are made, at what time, in what order, etc. example or template.

Answer 1

Как часто - зависит от проекта и процесса разработки, как надо выкатить обновление - так и вносите изменения.
Время - когда нагрузка на сервер минимальна.

Answer 2

There is no regulation. It all depends on the requirements for the service.
That is, there are only three main requirements:
1) minimize the downtime of the service, ideally, so that users do not notice the downtime at all, or it was not critical for them.
2) minimize the risks of making changes (post tested changes, have a ready-made and well-thought-out roll-back plan in case of a rollback)
3) make changes as cheap as possible. For example, if this can be done during business hours, you will not need to overpay after hours.