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Cloudflare brings in the Deno team so that Workers and Durable Objects can run on your own infrastructure

Ryan Dahl, creator of Node.js and Deno, joins Cloudflare with his team; they will merge celld and workerd so that self-hosting Workers becomes a first-class supported option.
October 9, 2026
Curated Medium

What it says

  • The Deno team joins Cloudflare and workerd, the open Workers runtime that Cloudflare uses in production, and celld, the Deno implementation published in August, will be merged.
  • celld is a single binary written in Rust whose only external dependency is object storage, and it distributes Durable Objects across several machines.
  • Cloudflare admits that workerd only supported Durable Objects on a single instance, valid for local testing but not for scaling.
  • Ryan Dahl and Bert Belder will lead the work to make self-hosting workerd a first-class supported route; more announcements will follow in the coming months.
  • The publication does not detail the financial terms of the deal.

The Tech Guardian summarises and comments in its own words on third-party publications. The full information is in the original source, which we recommend you read.

Our take

If you ruled out Cloudflare Workers for fear of vendor lock-in, this move changes the calculation: the stated goal is that the same application, Durable Objects included, can run on your servers or on another cloud. It is still a promise, so do not migrate because of it; but in your next architecture review, ask for a trial of celld to gauge the real cost of exit.

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