AhsanLab · Tech Lab

AI, code, and digital experiments, written in the open.

A focused publication from the AhsanLab workbench — practical AI updates, Laravel and Next.js notes, and honest lessons from shipping real software.

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AI: Applied, not hyped
Laravel: Backend craft
Next.js: Modern frontend

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Real-Time Backend

Real-Time Backend 11 min read · Jun 5, 2026

Your WebSocket Server Leaks Memory at 500 Connections — Here's Why

The memory graph climbed all night while the connection count sat flat at 500. The culprit was not a code leak — it was zombie sockets the garbage collector could never reach. A war story, a reproduction, and the five-line fix.

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Real-Time Backend 15 min

Building a Production WebSocket Backend That Survives Real Traffic

Connection lifecycle, authentication, room design, backpressure, and Redis pub/sub — everything it actually takes to run a WebSocket backend under real user load. Drawn from Matrix Bingo, a live multiplayer game at scale.

Jun 4, 2026

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Real-Time Backend

WebSocket, LiveKit SFU, multiplayer game infrastructure, and scaling real-time systems.

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Why AhsanLab Tech

A personal tech lab — useful, specific, and honest.

No hype, no filler. Just the patterns, trade-offs, and small wins that show up when you actually ship AI features, backends, and interfaces people rely on.

› Practical AI & LLM workflows
› Clean Laravel architecture
› Next.js & modern frontend
› Real project postmortems

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