☁️ Cloud & Infrastructure

One Click in the Wrong Region Tanked My Supabase Cold Starts—82% Fix, Zero Code Changes

Picture this: your app's first load drags like molasses, despite slick optimistic UI. Turns out, it was the database chilling 5,000 miles away in Mumbai while users tapped in Tokyo.

theAIcatchup Apr 10, 2026 3 min read
Latency graph: Supabase cold start dropping from 367ms Mumbai to 64ms Tokyo

⚡ Key Takeaways

  • Wrong Supabase region can inflate cold starts 5x—82% fix with zero code via migration. 𝕏
  • Migrations demand pg_dump hacks, full auth rewiring—budget a full day. 𝕏
  • CDN masks issues; always measure uncached latencies pre/post changes. 𝕏
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theAIcatchup

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#Postgres pg_dump #cold starts #latency optimization #performance optimization #region migration #supabase

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Originally reported by dev.to

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