NestJS Zero to Hero 01 — Mental Model, Setup và API đầu tiên
Hiểu NestJS giải quyết bài toán gì, dựng TaskFlow API bằng NestJS 11 và TypeScript strict, rồi lần theo một request từ bootstrap tới controller.
Filter/Tag
#backend
11 entries
-
-
Network Programming · Part 10 — Robust Networking: Errors, Retries & Debugging
Capstone: treat the network as unreliable — socket error codes, mandatory error handlers, timeouts at every layer, retries with backoff & jitter, reconnecting clients, and a layered debugging toolkit with Node.js + TypeScript.
-
Network Programming · Part 9 — Concurrency & Scaling Network Servers
How Node handles thousands of connections on one thread, scaling with cluster and worker_threads, load balancers, timeouts, keep-alive, graceful shutdown, and client pooling — bilingual with TypeScript examples.
-
Network Programming · Part 8 — Streams, Backpressure & Message Framing
TCP is a byte stream with no message boundaries — learn delimiter vs length-prefix framing, stateful decoders, and backpressure with socket.write() and drain in Node.js + TypeScript, bilingual.
-
Network Programming · Part 7 — TLS & HTTPS: Encrypting the Wire
Why plaintext HTTP is unsafe, how TLS encrypts and authenticates, the handshake, certificates, self-signed dev certs, node:tls and node:https servers — bilingual with runnable TypeScript examples.
-
Network Programming · Part 6 — WebSockets & Real-Time Communication
WebSockets for real-time push: HTTP limits, the upgrade handshake, ws server + client in Node.js + TypeScript, heartbeats, and when to use SSE/polling instead — bilingual with exercises.
-
Network Programming · Part 5 — HTTP From the Socket Up
HTTP is text over TCP: raw request/response anatomy, a minimal socket responder, node:http createServer, reading bodies, Content-Length vs chunked, keep-alive — bilingual with runnable TypeScript examples.
-
Network Programming · Part 4 — DNS & Addressing: From Names to IPs
How DNS turns hostnames into IP addresses, the resolution chain from your app to authoritative servers, Node.js dns.lookup vs dns.resolve, record types, TTL caching, and dual-stack IPv4/IPv6 — bilingual, with runnable TypeScript examples.
-
Network Programming · Part 3 — UDP & Datagrams: Fast and Connectionless
UDP for Node.js + TypeScript: connectionless datagrams with node:dgram, when UDP beats TCP, the 65507-byte limit, no backpressure, and beginner pitfalls — bilingual, with runnable examples.
-
Network Programming · Part 2 — TCP Sockets: A Reliable Byte Stream
Open real TCP sockets in Node.js: the three-way handshake, echo server + client with createServer/createConnection, socket events, graceful close, and common pitfalls — bilingual with exercises.
-
Network Programming · Part 1 — Fundamentals: How Data Actually Travels
The mental model every network programmer needs: the TCP/IP layers, IP addresses & ports, packets, and the client/server model — with a tiny Node.js + TypeScript demo, bilingual, plus exercises.