$ ./series/running-a-url-shortener-on-cloudflare-for-0

Running a URL Shortener on Cloudflare for $0

mol.la is an open-source URL shortener that runs on one Cloudflare Worker and one D1 database for $0 a month.

// 4 parts · ~35 min total ·System Design

1. 01The ArchitectureOctober 4, 2026 · ~8 min read→
2. 02The Redirect at the EdgeOctober 5, 2026 · ~9 min read→
3. 03Writes and Abuse on a Free PlanOctober 7, 2026 · ~9 min read→
4. 04Operating It for FreeOctober 8, 2026 · ~9 min read→

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