Ryan Dahl's celld brings open-source, self-hosted Durable Objects with Cloudflare-compatible API
threepointone · x · 2026-08-12
Six years after Cloudflare introduced Durable Objects, Deno creator Ryan Dahl has released celld, an open-source, self-hosted implementation. celld uses the same API as Cloudflare's Durable Objects and works with wrangler, but is designed to run on any cloud platform.
How it works:
- Virtual Machines: A VM can host many cells (durable objects) and provides compute.
- Cells: Each cell has its own SQLite database and worker process, enabling stateful compute.
- Replication: State updates are replicated via write-ahead log (WAL) to object storage on a different machine (e.g., S3, R2), ensuring recovery after crashes.
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