Global Flash Sale Engine (2/4): Admission Control & The Virtual Waiting Room

Auto-scaling alone cannot save you from TCP connection exhaustion. We architect a Virtual Waiting Room using Async Polling with Jitter, Edge Bot Defense, and Cryptographic Tokens to decouple traffic flow from inventory capacity.

May 9, 2026 · 8 min · Hiep

Global Flash Sale Engine (1/4): The Thundering Herd - Surviving the First Second

You don’t survive a flash sale by scaling up your database. You survive by ruthlessly shaping and dropping traffic before it reaches your core.

May 2, 2026 · 8 min · Hiep