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How do you balance rapid iteration and merging/upgrading? (programming.dev)

submitted 1 year ago by [email protected] to c/[email protected]

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More specifically, I'm thinking about two different modes of development for a library (private to the company) that's already relied upon by other libraries and applications:

Rapidly develop the library "in isolation" without being slowed down by keeping all of the users in sync. This causes more divergence and merge effort the longer you wait to upgrade users.
Make all changes in lock-step with users, keeping everyone in sync for every change that is made. This will be slower and might result in wasted work if experimental changes are not successful.

As a side note: I believe these approaches are similar in spirit to the continuum of microservices vs monoliths.

Speaking from recent experience, I feel like I'm repeatedly finding that users of my library have built towers upon obsolete APIs, because there have been multiple phases of experimentation that necessitated large changes. So with each change, large amounts of code need to be rewritten.

I still think that approach #1 was justified during the early stages of the project, since I wanted to identify all of the design problems as quickly as possible through iteration. But as the API is getting closer to stabilization, I think I need to switch to mode #2.

How do you know when is the right time to switch? Are there any good strategies for avoiding painful upgrades?

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[–] [email protected] 6 points 1 year ago

SemVer seems logical. If most of your changes are breaking, I don't think it really matters if you are releasing often or occasionally though.. If it's often, the users will get fatigued with upgrades. If it's occasionally, they'll be overwhelmed and push it off.

If most of your changes are breaking, you should just disclose that the software is in an alpha/beta state and that it can't be depended on to remain consistent until you have a defined policy about what gets released and when. It will be up to the users to decide if they are comfortable with those terms.