https://tuanhiep.github.io/series/global-flash-sale-engine/Recent content in Global Flash Sale Engine on Tuan Hiep TRAN — System Design & AI InfraHugoen-usSat, 09 May 2026 00:00:00 +0000https://tuanhiep.github.io/posts/series_3/2.global_flash_sale_engine_admission/Sat, 09 May 2026 00:00:00 +0000https://tuanhiep.github.io/posts/series_3/2.global_flash_sale_engine_admission/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.https://tuanhiep.github.io/posts/series_3/1.global_flash_sale_engine_thundering_herd/Sat, 02 May 2026 00:00:00 +0000https://tuanhiep.github.io/posts/series_3/1.global_flash_sale_engine_thundering_herd/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.