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Node.js SME Cookbook

Sections

Node.js Core & Runtime

Node.js Basics How Node.js Works Installing & Version Management Node.js Release & LTS Policy The REPL & Quick Experiments Running Scripts & Shebang Node.js vs Bun vs Deno Reading the Official Docs & Diagnostics Node.js Fundamentals Best Practices Highlights Summary

Modules and Imports Buffers and Encoding Streams and Pipelines Events and EventEmitter Filesystem and Path HTTP and Fetch Process and Workers Async Patterns Errors and Debugging CLI Env and Config Testing with Node Performance Diagnostics Highlights Summary

The Node.js Event Loop Event Loop Basics libuv Phases Microtasks vs Macrotasks async/await in Node Callbacks vs Promises Migration Timers & Scheduling Detecting Event-Loop Blockage Event Loop Best Practices Highlights Summary

Node.js Module Types Modules Basics CommonJS (`require`)ES Modules (`import`)package.json `"type"` & `exports`CJS ↔ ESM Interop Module Resolution Algorithm Modules Best Practices Highlights Summary

The TypeScript-to-Node.js Pipeline TypeScript in Node Basics tsx vs tsc vs ts-node Typing Express/Fastify Handlers Zod at Boundaries Sharing Types with Frontend Gradual Typing Brownfield TypeScript in Node Best Practices Highlights Summary

The Node.js Buffer Model Buffers Basics Text Encodings Binary Protocols Buffer Security Buffers Best Practices Highlights Summary

How Node.js Streams Work Streams Basics Readable & Writable Patterns Transform & Duplex stream/promises.pipeline Backpressure Streaming HTTP Responses Streams Best Practices Highlights Summary

The Node.js EventEmitter Model EventEmitter Basics Memory Leaks from Listeners Typed EventEmitter Domain Events vs EventEmitter Events Best Practices Highlights Summary

Node.js Process & Worker Model Processes Basics child_process worker_threads cluster Module Process Signals & Shutdown Processes Best Practices Highlights Summary

The Node.js Standard Library Built-in APIs Basics path and url Timers and Scheduler fs and fs/promises util and diagnostics crypto os and process Built-in APIs Best Practices Highlights Summary

Tooling, Packages & Quality

The Node.js Package Management Model Package Managers Basics package.json Scripts Lockfiles & Reproducible Installs Workspaces & Monorepos Publishing to npm engines & engine-strict Supply Chain: npm audit & Socket Package Managers Best Practices Highlights Summary

Node.js Project Structure Project Setup Basics Scaffolding APIs Turborepo for Node Nx for Node Backends Multi-Service Monorepo Project Setup Best Practices Highlights Summary

Static Analysis in Node.js Projects Linting Basics Prettier Integration Typecheck in CI Import Boundaries knip & Dead Code Linting Best Practices Highlights Summary

The Anatomy of a Node.js Test Suite Testing Basics node:test & node:assert Vitest Jest in Brownfield Supertest & HTTP Integration Testcontainers Contract & Pact Tests Load Testing with k6/Artillery Testing Best Practices Highlights Summary

The Mental Model Behind Node.js Engineering Rules Node Project Rules Checklist Async & Event Loop Rules Security Rules Dependency Rules Logging & Observability Rules API Rules ADR Template for Node Node.js Rules Best Practices Highlights Summary

Architecture & System Design

The Architecture Mental Model for Node.js Services Architecture & Design Basics Hexagonal Architecture in Node Modular Monolith Microservices When Worth It ADR: Monolith vs Services Refactoring Checklist Architecture Best Practices Highlights Summary

Node.js Configuration & Secrets Configuration Basics Zod & env-schema Validation dotenv vs Platform Inject Secrets Managers Feature Flags & Runtime Toggles Configuration Best Practices Highlights Summary

Node.js Modularity Modularity Basics Dependency Injection Patterns Use Cases & Services Repository Pattern Modularity Best Practices Highlights Summary

Node.js API Design API Design Basics OpenAPI & Swagger Error Response Standards Pagination & Filtering Versioning & Deprecation API Design Best Practices Highlights Summary

Debugging Node.js Production Issues Debugging Basics Memory Leak Hunt Promise That Never Settles Event-Loop Stall Incident Connection Pool Exhaustion Unhandled Rejection Production Outage Debugging Best Practices Highlights Summary

HTTP, Frameworks & Real-Time

The Node.js HTTP Server Model HTTP Basics in Node Routing Without Frameworks Middleware Pattern Keep-Alive & Connection Limits Reverse Proxy Awareness HTTP/2 & HTTP/3 Considerations HTTP Fundamentals Best Practices Highlights Summary

The Express Middleware Pipeline Model Express Basics Middleware Ordering Error Handling in Express Security Middleware Express 5 Migration Performance on Express Express Best Practices Highlights Summary

Fastify's Encapsulation Model Fastify Basics JSON Schema Validation Fastify Plugins Logging with Pino Testing Fastify Apps Fastify vs Express ADR Fastify Best Practices Highlights Summary

The NestJS Module Graph NestJS Basics Dependency Injection Guards, Interceptors & Pipes NestJS + Prisma/TypeORM Microservices Mode NestJS Performance Reality NestJS Best Practices Highlights Summary

Lightweight Web Frameworks Hono Basics Hono on Node vs Edge Koa & Polka Framework Selection Checklist Lightweight Frameworks Best Practices Highlights Summary

Real-Time Communication in Node.js Real-Time Basics ws Library Socket.IO Server-Sent Events Scaling Real-Time Real-Time Best Practices Highlights Summary

Data, Auth & Integration

Node.js Database Connectivity Databases Basics node-postgres (`pg`)Prisma Drizzle ORM MongoDB Driver Connection Pool Tuning Databases Best Practices Highlights Summary

How Caching Works in Node.js Caching Basics ioredis Session Stores Distributed Locks Caching Best Practices Highlights Summary

The Producer-Consumer Model Queues Basics BullMQ AWS SQS Consumers Idempotency Keys Scheduling & Cron Queues Best Practices Highlights Summary

Authentication & Authorization Models Auth Basics Passport.js & Middleware Auth JWT Access + Refresh OAuth2/OIDC RBAC & ABAC Auth Best Practices Highlights Summary

The Integration Boundary Integrations Basics Webhook Verification Retry & Outbound Resilience Stripe, Twilio & SDK Patterns Integration Failure Playbook Integrations Best Practices Highlights Summary

Performance, Security & Observability

Latency, Throughput & Bottlenecks Performance Basics clinic.js Suite Load Testing Memory & GC Tuning JSON Serialization Cost Performance Best Practices Highlights Summary

The Node.js Trust Boundary Security Basics OWASP Top 10 for APIs Prototype Pollution SSRF Guards Dependency Scanning Security Headers & CORS Security Best Practices Highlights Summary

The Node.js Logging Model Logging Basics pino Request Correlation IDs AsyncLocalStorage for Context PII Redaction & Compliance Logging Best Practices Highlights Summary

The OpenTelemetry Data Model Observability Basics OpenTelemetry Node SDK Metrics that Matter SLOs & Error Budgets APM Tools Observability Best Practices Highlights Summary

The Node.js Resilience Model Resilience Basics Timeouts Everywhere Retries with Backoff Circuit Breakers Graceful Degradation Resilience Best Practices Highlights Summary

Deployment, Platforms & Operations

The Container Model for Node.js Docker Basics Multi-Stage Builds Distroless & Alpine Trade-offs Non-Root Containers Health & Readiness Probes Image Slimming Docker Best Practices Highlights Summary

The Serverless Execution Model Serverless Basics Lambda Handler Patterns Cold Start Mitigation @aws-sdk v3 serverless-express / aws-lambda-fastify Serverless Best Practices Highlights Summary

The CI/CD Delivery Pipeline CI/CD Basics GitHub Actions for Node Quality Gates Semantic Release Preview Environments CI/CD Best Practices Highlights Summary

The Container Orchestration Model Platform Deploy Basics Kubernetes Deployment HPA & Resource Limits ECS Fargate & Cloud Run ConfigMaps & Secrets Platform Deploy Best Practices Highlights Summary

The Node.js Process Lifecycle Runtime Ops Basics Graceful Shutdown Zero-Downtime Deploys PM2 & systemd On-Call Runbook Starters Runtime Ops Best Practices Highlights Summary

Ecosystem & Team

The Node.js Dependency Model Essential Libraries Basics zod pino got / axios date-fns / Luxon bullmq / ioredis Essential Libraries Best Practices Highlights Summary

The Agent Skill Model Agent Skills Basics API Scaffold Skill Queue Worker Skill Node Upgrade Skill Incident Triage Skill Agent Skills Best Practices Highlights Summary

The Git Object Model Git Basics for Node Teams GitHub Actions Integration Git & GitHub Best Practices Highlights Summary

Linux CLI Fluency for Node.js Engineers CLI Basics for Node Process Inspection Linux CLI Best Practices Highlights Summary

The Node.js Team Capability Model Onboarding Basics Frontend → Node Path Skills Matrix Pairing on API PRs Team & Onboarding Best Practices Highlights Summary

Tech-Lead Craft

Production Incident Response as a Discipline Incident Basics OOM Killer Response Database Outage Mode Bad Deploy Rollback Post-Mortem Template Incident Response Best Practices Highlights Summary

What Enterprise Delivery Actually Optimizes For Delivery Basics Feature Flags Canary & Progressive Delivery DORA Metrics for Node Teams Enterprise Delivery Best Practices Highlights Summary

The Tech Lead Mental Model Tech Lead Basics on Node ADR: Framework Selection Code Review Standards Mentoring Junior Node Devs Handling Technical Disagreements Technical Leadership Best Practices Highlights Summary

The Product-Engineering Partnership Product Collaboration Basics Prioritizing Tech Debt Estimation & Risk Stakeholder Communication Working with Product Best Practices Highlights Summary

How to Read a Case Study Reference: B2B SaaS API Reference: Worker Fleet Reference: Internal CLI Tool Before/After: Express → Fastify Migration Before/After: Node 20 → 24 LTS Upgrade Case Studies Best Practices Highlights Summary

Engineering Governance at Scale Governance Basics Coding Standards Dependency Governance Node Upgrade Policy Tracking Node RFC & Diagnostics Career Growth: Senior → Staff Governance Best Practices Highlights Summary

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Buffers and Encoding