How I Built a Real-Time Precious Metals Price Feed for 30,000 Concurrent Users in Laravel

How I Built a Real-Time Precious Metals Price Feed for 30,000 Concurrent Users in Laravel

Architecture walkthrough: Laravel Reverb, WebSocket broadcasting, Redis pub/sub, and the tricks that make it hold under real load.

The Problem

A live precious metals trading platform needs to push gold and silver price updates to every connected user the moment a tick arrives — not every 5 seconds via polling, not via a REST endpoint they hammer on a timer. Real-time. Sub-second latency. And it needs to handle 30,000 simultaneous connections without melting.

This post walks through exactly how I built this using Laravel 11, Laravel Reverb, Redis, and a few architectural decisions that made the difference between a demo and something production-ready.