GitHub Actions cache not working for Node.js dependencies in monorepo setup
I'm having trouble with I'm a bit lost with I'm working on a Node.js monorepo using Yarn workspaces, and I've set up GitHub Actions to run my CI/CD pipeline... However, I noticed that my `node_modules` directory is being reinstalled every time the workflow runs, which significantly increases the build time. I've added a caching step to my workflow, but it doesn't seem to be functioning as expected. Here's the relevant part of my `ci.yml` file: ```yaml name: CI on: push: branches: - main jobs: build: runs-on: ubuntu-latest steps: - name: Checkout code uses: actions/checkout@v2 - name: Set up Node.js uses: actions/setup-node@v2 with: node-version: '14' - name: Cache node modules uses: actions/cache@v2 with: path: ~/.cache/yarn key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }} restore-keys: | ${{ runner.os }}-yarn- - name: Install dependencies run: yarn install --frozen-lockfile - name: Run tests run: yarn test ``` I assumed that by caching the `~/.cache/yarn` directory, it would speed up subsequent runs by reusing cached dependencies. However, every time the action runs, it indicates that the cache is missing: ``` Cache not found for input keys: ubuntu-latest-yarn-<hash> ``` I've checked the `yarn.lock` file and ensured it's in the repository. I also tried using the `path` as `node_modules` directly, but that didn't seem to help either. Any suggestions on what I might be missing? Is there a best practice for caching in a Yarn monorepo setup with GitHub Actions? I'm using Yaml stable in this project. Any pointers in the right direction? I recently upgraded to Yaml 3.10. Is there a simpler solution I'm overlooking? For reference, this is a production CLI tool. What's the correct way to implement this?