Spring Full-Stack Practical Cases

Apr 24, 2026 · Backend Development

Build a Millisecond‑Level Real‑Time Online System with Spring Boot, WebSocket, and Redis

This article demonstrates how to create a millisecond‑level real‑time online user tracking system using Spring Boot 3.5, WebSocket with STOMP, and Redis pub/sub, covering environment setup, Maven dependencies, server‑side configuration, presence services, event listeners, and a simple front‑end page.