ab-test-setup
FreePlan, design, and implement A/B tests and experiments with statistical rigor. Covers hypothesis frameworks, sample sizing, metrics, and result analysis.
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CI/CD con GitHub Actions: pipeline stages, caching, environments, branch protection, deploy strategies.
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Run score Not tested
See how to installReview the instructions the agent will receive before you install.
→ Read references/checklist.md for full 12-item pipeline setup checklist
GitHub Actions. Principle: fail fast, cache aggressively, gate production.
| Stage | Purpose | Notes |
|---|---|---|
| 1. Lint | Style + static analysis | Cheapest — run first |
| 2. Type-check | tsc --noEmit or equiv | Catches errors before tests |
| 3. Test | Unit + integration | Service containers for DB |
| 4. Build | Compile/bundle artifact | After tests pass |
| 5. E2E | Playwright (separate job) | Needs build artifact |
| 6. Deploy | Push image / deploy | Only on main/tags |
Parallelize lint + type-check + test; build waits for all.
| Decision | Guidance |
|---|---|
| Matrix | Only for libraries (multi-version); apps pin one version |
| Caching | Always — setup-node/setup-go built-in; actions/cache for custom |
| Artifacts | Upload dist/ (7d retention); download in deploy job |
| Concurrency | Group per workflow+ref; cancel-in-progress: true on PRs |
| Pinning | Third-party actions by full commit SHA with the version in a comment; a bot keeps them current |
| Reusable | Shared logic → org/shared-workflows repo |
| Monorepo | Path filters; run only affected packages |
| Rule | Why |
|---|---|
permissions: contents: read at the top, widened per job | The token defaults to more than most jobs need |
No contributed code in pull_request_target / workflow_run | They run with secrets and a write token, even for forks |
Untrusted ${{ github.event.* }} only through env: | Expressions expand before the shell: a PR title can run commands |
OIDC (id-token: write) instead of stored cloud keys | Short-lived credentials scoped to repo + branch |
npm ci / --frozen-lockfile in every install step | See /supply-chain-security |
→ Read references/actions-hardening.md for examples of each rule, the repo settings to change,
persist-credentials, and workflow linters (actionlint,zizmor)
| Env | Trigger | Gate |
|---|---|---|
| staging | Push to main | Auto-deploy, no review |
| production | Tag v* or manual dispatch | Required reviewers (1-2) |
Promotion: CI green + staging smoke test + changelog reviewed. Use GitHub Environments for secret isolation.
→ Read references/secret-and-deploy.md for branch protection checklist, secret location table, and deploy strategies (rolling/blue-green/canary/OTA)
→ Read references/anti-patterns.md for 8 common CI/CD anti-patterns
permissions: read-only by default; no pull_request_target running PR code; untrusted inputs via env:No reviews yet. Tell others what you thought.
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Plan, design, and implement A/B tests and experiments with statistical rigor. Covers hypothesis frameworks, sample sizing, metrics, and result analysis.
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The English summary is being prepared. Showing the original description.