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Hand-written tutorials, ordered as a recommended learning path.

1. 21 Node.js Streams Master Node.js streams for efficient data processing. Covers readable, writable, transform, and duplex streams with real-world examples. 7 min read →
2. 22 Async Iterators Master async iterators in Node.js for streaming files, paginated APIs, and backpressure-aware data processing. 4 min read →
3. 23 Cluster Learn how the Node.js cluster module forks worker processes to use every CPU core and how to share sockets between them safely. 4 min read →
4. 24 Inspector Step through Node.js code with Chrome DevTools and VS Code by attaching to the built-in inspector, including remote and production debugging tips. 4 min read →
5. 25 EventEmitter EventEmitter is the backbone of Node. Here are the patterns that make it useful in real systems and the mistakes that turn it into a footgun. 5 min read →
6. 26 Express vs Fastify Compare Express and Fastify on performance, ergonomics, plugin model, and TypeScript support to pick the right HTTP framework for your project. 4 min read →
7. 27 fs and streams Read and write files in modern Node using fs/promises, and learn when to switch to streams for memory-friendly processing of large data. 4 min read →
8. 28 gRPC Server Build a typed, high-performance gRPC server in Node.js with protobuf definitions, streaming RPCs, and production-ready patterns. 4 min read →
9. 29 Graceful Shutdown Implement graceful shutdown in Node.js services with signal handling, connection draining, and timeouts that survive real production deploys. 4 min read →
10. 30 Node Mem Leaks Find and fix memory leaks in Node.js using heap snapshots, sampling, and a few reliable patterns to avoid leaks. 4 min read →
11. 31 Mongoose Model MongoDB data in Node.js with Mongoose, covering schemas, validation, queries, population, and indexes for production apps. 4 min read →
12. 32 Pino Logging Set up structured, high-performance logging in Node.js with Pino, including child loggers, redaction, and pretty-printing for development. 4 min read →
13. 33 Process vs Thread Understand when to reach for child processes, worker threads, or the cluster module to scale Node.js workloads. 4 min read →
14. 34 Redis and BullMQ Build a reliable background job system in Node.js using Redis and BullMQ, with queues, workers, retries, and scheduled jobs. 4 min read →
15. 35 Streams How Node.js streams really work, why backpressure matters, and how to compose readable, writable, and transform streams without blowing up memory. 4 min read →
16. 36 TypeScript Setup Set up a clean, modern TypeScript project for Node.js with tsconfig, build scripts, ESM, and a dev loop that does not get in your way. 4 min read →
17. 37 Workers vs Cluster When to reach for worker_threads versus cluster in Node.js, with a clear mental model, real code, and the pitfalls that bite people in production. 5 min read →
18. 38 Zod Use Zod to validate and infer types for request payloads, environment variables, and external data in Node.js apps. 4 min read →
19. 39 WebSockets Node Build a real WebSocket server in Node.js: handshake, broadcasting, heartbeats, backpressure, and scaling beyond a single process. 4 min read →