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Improve Bazel caching strategy in GitHub Actions presubmit workflow. #165

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Merged
copybara-service merged 1 commit into from
Jul 27, 2026
+19 −9
Merged

Improve Bazel caching strategy in GitHub Actions presubmit workflow. #165

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5 changes: 4 additions & 1 deletion .bazelrc
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Original file line number Diff line number Diff line change
Expand Up @@ -2,4 +2,7 @@
build --action_env=CC=clang
build --action_env=CXX=clang++
build --repo_env=CC=clang
build --repo_env=CXX=clang++
build --repo_env=CXX=clang++

# retry transient network timeouts when downloading external repositories
build --http_connector_attempts=3
23 changes: 15 additions & 8 deletions .github/workflows/presubmit.yml
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Expand Up @@ -38,20 +38,27 @@ jobs:
- name: Set bazel version
run: echo "${{ matrix.bazel-version }}.x" > .bazelversion

- name: Cache bazel build artifacts
- name: Cache Bazel repository dependencies
uses: actions/cache@9255dc7a253b0ccc959486e2bca901246202afeb # pin@v5.0.1
with:
path: |
~/.cache/bazel
key: ${{ runner.os }}-bazel-v${{ matrix.bazel-version }}-${{ hashFiles('.bazelrc', '.bazelversion', 'MODULE.bazel.lock') }}-${{ github.sha }}
path: ~/.cache/bazel-repo
key: ${{ runner.os }}-bazel-repo-v${{ matrix.bazel-version }}-${{ hashFiles('.bazelrc', '.bazelversion', 'MODULE.bazel', 'MODULE.bazel.lock') }}
restore-keys: |
${{ runner.os }}-bazel-v${{ matrix.bazel-version }}-${{ hashFiles('.bazelrc', '.bazelversion', 'MODULE.bazel.lock') }}-
${{ runner.os }}-${{ hashFiles('.bazelrc', '.bazelversion', 'MODULE.bazel.lock') }}-
${{ runner.os }}-bazel-repo-v${{ matrix.bazel-version }}-

- name: Cache Bazel build outputs
uses: actions/cache@9255dc7a253b0ccc959486e2bca901246202afeb # pin@v5.0.1
with:
path: ~/.cache/bazel-disk
key: ${{ runner.os }}-bazel-disk-v${{ matrix.bazel-version }}-${{ hashFiles('.bazelrc', '.bazelversion', 'MODULE.bazel', 'MODULE.bazel.lock', '**/BUILD', '**/BUILD.bazel', '**/*.bzl') }}-${{ github.sha }}
restore-keys: |
${{ runner.os }}-bazel-disk-v${{ matrix.bazel-version }}-${{ hashFiles('.bazelrc', '.bazelversion', 'MODULE.bazel', 'MODULE.bazel.lock', '**/BUILD', '**/BUILD.bazel', '**/*.bzl') }}-
${{ runner.os }}-bazel-disk-v${{ matrix.bazel-version }}-

- name: "Run `bazel build`"
run: |
bazel build -c opt //...
bazel build --repository_cache=~/.cache/bazel-repo --disk_cache=~/.cache/bazel-disk -c opt //...

- name: "Run `bazel test`"
run: |
bazel test -c opt //...
bazel test --repository_cache=~/.cache/bazel-repo --disk_cache=~/.cache/bazel-disk -c opt //...
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