Configures deployment pipelines, manages environment variables, schedules cron jobs, applies security headers, implements caching strategies. Use when working with Docker, Vercel, AWS, Dockerfile, nginx.conf, or platform deployment configs.
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See deployment-config.md for full architecture, env vars, cron jobs, caching headers.
Precedence: .env (committed defaults) → .env.local (git-ignored) → .env.production / .env.preview → platform-injected (highest). Gitignore .env.local, .env.*.local.
Validate the whole environment with one Zod schema at startup, not at point of use. SCREAMING_SNAKE_CASE; PUBLIC_*/NEXT_PUBLIC_* is browser-exposed, SECRET_*/*_SECRET server-only.
main → production, feature/* and fix/* → preview, all automatic. Stages in order: install (always --frozen-lockfile in CI) → lint → test → production build → deploy.
Cron route handlers must return 401 unless the authorization header equals Bearer ${process.env.CRON_SECRET}.
Set per-asset via framework headers() config or CDN rules — never a blanket no-store.
| Asset Type | Cache-Control |
|---|---|
| Hashed assets (JS, CSS), images, fonts | public, max-age=31536000, immutable |
| Favicon / manifest | public, max-age=86400 |
| SSG HTML | public, max-age=0, must-revalidate |
| API responses | private, no-cache |
| ISR pages | public, s-maxage=3600, stale-while-revalidate=86400 |
Load security-hardening skill for full CSP inventory and header configuration.
Gate a release on lint + test + build all exiting 0 and no draft PRs, then semver-tag with a changelog categorized Features / Fixes / Breaking. Verify with curl -sI https://example.com | grep -E 'HTTP|Strict' — homepage 200, headers correct.
A failed release gets rolled back immediately, not patched forward. Prefer platform rollback (promote last good deploy) over git revert -m 1 HEAD && git push; re-run the curl -sI check before calling it resolved.
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