Why do monorepo teams combine path filters with separate workflows per package for CI optimization?
Select an answer to reveal the explanation.
Short Explanation and Infographic
Path-filtered workflows skip untouched monorepo packages—fewer Actions minutes and cooler queues. They do not force full rebuilds, kill caches, or eliminate tests for changed code.
Full explanation below image
Full Explanation
In large monorepos, a single workflow that always builds everything wastes minutes. Splitting workflows (or jobs) by package and adding on.push.paths / pull_request paths focuses CI on affected areas. That shortens feedback loops and lowers cost while keeping thorough tests where code changed. Path filters do not intentionally rebuild everything on docs typos—docs paths can be excluded via paths-ignore. Caching remains available and is still recommended per ecosystem. Tests remain essential for changed packages; filters only skip irrelevant work. Advanced setups compute a dynamic matrix of changed packages via a planning job when path filters alone are too coarse.