Design Patterns · Middle · Question 52 of 75

What is Branch by Abstraction?

✓Correct answer: Introducing an abstraction over the part to replace, switching implementations behind it on the main branch, then removing the old one
2Creating a long-lived Git branch for a rewrite
3Abstracting Git branches in CI

Explanation

It allows large replacements (e.g. a charting library) without long-lived branches, often combined with a feature flag.

Further reading

Martin Fowler: Branch By Abstraction ↗

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