How I built a flash-sale engine that can't oversell

<p>Every high-traffic system eventually hits the same wall: your data store can't keep up. For us, the breaking point came when a simple product lookup — backed by Elasticsearch —

<h2> The Problem We Were Actually Solving </h2> <p>We werent building a generic scale story; we were protecting a money-printing loop. The treasure-hunt engine awarded cash prizes

<p>The Problem We Were Actually Solving</p> <p>In 2024 we shipped the treasure-hunt engine for Veltrix at 2,300 concurrent sessions running 180,000 packets per second across 4 AWS

<p>I built this project for the <strong>#H0Hackathon</strong> (Hack the Zero Stack with Vercel and AWS Databases). This post covers how I built it using Amazon DynamoDB and