Production GitHub Actions pipeline from scratch: npm/pip cache, multi-version Node/Python matrix builds, Docker layer caching, Lint+Test+Build+Publish stages, conditional execution, env matrix, failure retry, and release gating best practices. Complete workflow YAML included.
Systematic test pyramid breakdown: bottom unit tests (many, fast, mock isolated), middle integration tests (real service/db/message interaction), top E2E tests (few, critical user flows). Recommended ratio 70/20/10, with coverage metrics and implementation playbook.
Complete monorepo guide for large fullstack projects: pnpm workspace for unified dependency install + linking, Turborepo for task orchestration, incremental builds and remote caching. Compares Nx/Lerna, includes code sharing and release best practices.
End the API style debate: compared across 7 dimensions - network efficiency, DX, evolution cost, caching, type-safety, security risks, ecosystem - with clear decision tree and hybrid architecture patterns.
Comprehensive JWT vulnerability playbook: alg confusion attacks, key brute force, KID injection, replay defenses. Compare OAuth2(+PKCE), OIDC, SAML 2.0 across dimensions for protocol selection.
Node.js performance diagnostics: clinic.js one-click reports, reading flamegraphs for hot functions, event-loop blockers, memory leak stacks to pinpoint CPU/memory bottlenecks.
