● Covered by 1 source · 1 reportMedium impact1 neutral
Celld Enables Self-Hosted, Distributed Cloudflare Workers and Durable Objects
Key points
- Celld runs Cloudflare Workers and Durable Objects on self-hosted machines.
- Each object is a SQLite database, replicated to an S3-compatible bucket.
- Nodes coordinate via the S3 bucket, without a control plane or consensus.
- It supports Linux x86-64 and ARM64, and integrates with Docker.
Introduction to Celld
Celld is an open-source daemon designed to run Cloudflare Workers and Durable Objects on user-owned machines. This allows developers to deploy and manage these serverless components within their own infrastructure, providing more control over the environment.
Architecture and Data Management
The core architecture of Celld involves treating each Durable Object as its own SQLite database. These individual databases are then replicated to an S3-compatible bucket, which serves as the durable source of truth. This design eliminates the need for a centralized control plane or consensus mechanism, as nodes coordinate directly through the object storage bucket using compare-and-swap operations to manage object ownership.
Execution Environment
Each Celld node embeds the V8 JavaScript engine to execute Wrangler bundles, which are the deployment artifacts for Cloudflare Workers. The system is designed for sharding by construction, as each object's independent database minimizes contention and blast-radius failures often associated with shared databases. Idle objects can also hibernate to conserve resources.
Deployment and Installation
Celld provides an installer script for direct binary installation, with provenance verification available via `gh attestation verify`. It also supports deployment via Docker, with images available for Linux x86-64 and ARM64. Users can configure Celld to connect to any S3-compatible bucket and specify network settings for node communication.
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Primary sources
GitHub cmc_internal/api GitHub github/collect GitHub denoland/celld GitHub _private/browser GitHub get-started/accessibility GitHub open-source/sponsorsReporting from
Celld is an open-source daemon that allows users to run Cloudflare Workers and Durable Objects on their own infrastructure. It uses individual SQLite databases for each object, replicated to an S3-compatible bucket, eliminating the need for a control plane or consensus mechanism.