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Developer uses DynamoDB sparse GSI to power real-time post scheduler for indie devs

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A developer built SlothPost, a social media scheduling tool for indie developers, as part of the H0 Hackathon combining Vercel and AWS databases. The app connects to GitHub, Vercel, and the App Store to capture user activity and auto-draft posts for X and Threads. To handle per-product posting schedules without server-side cron support in DynamoDB, the developer implemented a sparse Global Secondary Index (GSI) that only indexes actively scheduled products. This approach keeps queries efficient by avoiding full table scans, since only items with a scheduleStatus attribute appear in the index. The full application runs on Next.js hosted on Vercel, uses DynamoDB as its primary database, and relies on Cloudflare Workers to trigger the scheduling logic.

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Developer uses DynamoDB sparse GSI to power real-time post scheduler for indie devs · ShortSingh