// blog/tag/

$ grep -r "#backend" blog/

#backend 2 articles

socket-tester Rewrite: From ExpressJs WebSocket Tool to Multi-Protocol Testing Platform

I rewrote ws-tester from scratch — ExpressJs is gone, replaced by a NestJS proxy backend and a React frontend that supports WebSocket, Socket.IO, MQTT, and AMQP with performance testing, network simulation, and shareable configs.

Apr 18, 2026 ~6 min read

#backend #typescript #web-dev #docker

Multi-Protocol Echo Server with NestJS: WebSocket, Socket.IO, and MQTT in a Single App

Testing real-time integrations usually means spinning up multiple services. I built socket-server — a NestJS server that exposes native WebSocket, Socket.IO, and an embedded MQTT broker from a single process.

Apr 17, 2026 ~4 min read