Java Backend Technology

Nov 21, 2020 · Backend Development

Why Your RocketMQ Consumer Stalls: Uncovering the Hidden VIP Port Issue

This article walks through a real‑world RocketMQ failure where a consumer could not receive messages due to an unreachable VIP port, explains the broker’s three‑port architecture, shows how to diagnose the problem via logs, and provides code and configuration fixes to restore normal consumption.