Dev rebuilds Radish: a full Redis server inside a Cloudflare Durable Object
dinasaur_404 · x · 2026-09-16
Developer Dhravya Shah revamped his old project Radish, running a complete Redis server inside a Cloudflare Durable Object as a weekend experiment to test how well top models now handle systems and database design.
Key points:
- Uses DO's built-in SQLite as hot storage with R2 cold storage beyond the 10GB mark; fully serverless and ACID compliant.
- Multi-tenant: you can run a separate Redis instance per user.
- Limitations: an order of magnitude less QPS than a single-node Redis, no inbound TCP for Workers/DOs, not production-ready.
- The author says the original was terrible, and the AI-assisted rebuild turned out far better now that he knows more about databases.
dok2001 called Durable Objects the best cloud primitive for the agentic era.
Related event: Developer Runs Full Redis Server Inside a Cloudflare Durable Object(2 posts)→
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