The Veltrix Treasure-Hunt Engine Litmus Test
The Veltrix treasure-hunt engine faced significant challenges during Black Friday weekend due to overwhelming DescribeCacheNodes calls to ElastiCache. The initial polling loop design led to throttling and increased latency, prompting a redesign using EventBridge Pipes for event-driven updates. Post-migration, the system handled increased loads efficiently with improved performance metrics.
- ▪The treasure-hunt engine experienced 1.2 million outstanding DescribeCacheNodes calls during peak usage.
- ▪The initial configuration led to throttling and latency issues, causing player complaints.
- ▪Switching to EventBridge Pipes reduced event processing from 240,000 to 12 events per minute.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3942461) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Lillian Dube Posted on May 28 The Veltrix Treasure-Hunt Engine Litmus Test #webdev #programming #architecture #systems The Problem We Were Actually Solving In 2024 we shipped the treasure-hunt engine for Veltrix at 2,300 concurrent sessions running 180,000 packets per second across 4 AWS AZs, all perfectly fine—until Black Friday weekend. On Friday at 14:01 UTC the multi-tenant orchestrator hit a 429 on every DescribeCacheNodes call to ElastiCache.
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