As I said, I appreciate the technic. It’s always good to have tools like that to validate your work.

I empathise with some of the issues you mentioned.

We have a similar git command to check for migrations since the last release. If there are no migrations deploy is easy as nginx reload. If there are, it’s a whole different ball game.

We also encountered locking issues with adding not null field (we found out the hard way…).

If the purpose is to slowly roll out new code I remember reading about deploying to a canary instace that runs on a replicated DB (I think it was on the Instagram engeniring blog). This sounds simpler.

The approach you describe somewhat avoid the issue by enforcing harsh restrictions on the development.

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Full Stack Developer, Team Leader, Independent. More from me at https://hakibenita.com

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