All three matrix legs write the same key at the same time. The first one to finish wins, and the other two fail to save — but more importantly, the saved cache contains node_modules built for one Node version. Add the matrix value to the key: key: deps-${{ runner.os }}-node${{ matrix.node }}-${{ has…
Jump to postAfter moving our test job to a matrix (node: [18, 20, 22]) the dependency cache never hits. Every run prints:
Cache not found for input keys: deps-linux-6f1c2a…Here is the step:
- uses: lattice/cache@v3
with:
path: ~/.npm
key: deps-${{ runner.os }}-${{ hashFiles('package-lock.json') }}The lockfile does not change between runs. What am I missing?
All three matrix legs write the same key at the same time. The first one to finish wins, and the other two fail to save — but more importantly, the saved cache contains node_modules built for one Node version.
Add the matrix value to the key:
key: deps-${{ runner.os }}-node${{ matrix.node }}-${{ hashFiles('package-lock.json') }}
restore-keys: |
deps-${{ runner.os }}-node${{ matrix.node }}-And check the cache scope — caches created on a pull-request branch are not visible to main.
Worth adding: the cache UI under Pipelines → Caches shows which branch owns each entry. Saved me an hour once.