Show HN: OpenWorkers – Self-hosted Cloudflare workers in Rust

Self-hosted Cloudflare Workers in RustOpenWorkers is an open-source runtime for executing JavaScript in V8 isolates. It brings the power of edge computing to your own infrastructure. What works today Features Bindings • KV storage (get, put, delete, list) • PostgreSQL database • S3/R2-compatible storage • Service bindings • Environment variables & secrets Web APIs • fetch, Request, Response • ReadableStream • crypto.subtle • TextEncoder/Decoder, Blob • setTimeout, AbortController Architecture ┌─────────────────┐ │ nginx (proxy) │ └────────┬────────┘ │ ┌───────────────┬────────┴──┬───────────────┐ │ │ │ │ │ │ │ │ ┌────────┸────────┐ ┌────┸────┐ ┌────┸────┐ ┌────────┸────────┐ │ dashboard │ │ api │ │ logs * │ │ runner (x3) * │ └─────────────────┘ └────┬────┘ └────┰────┘ └────────┰────────┘ │ │ │ │ │ │ ┌────────┸────────┐ │ ┌────────┸────────┐ │ postgate * │ └──────┥ nats │ └─────────────────┘ └────────┰────────┘ │ │ ┌─────────────────┐ ┌──────┴───────┐ * ─────┥ PostgreSQL │ │ scheduler * │ └─────────────────┘ └──────────────┘ +-------------+ | nginx proxy | +------+------+ | +-------+-------+-------+--------+ | | | | +--+--+ +--+--+ +--+---+ +----------+-+ | dash| | api | |logs *| | runner * x3| +-----+ +--+--+ +--+---+ +-----+------+ | | | +-----+----+ | +------+-----+ |postgate *| +----+ nats | +-----+----+ +------+-----+ | | +-----+------+ +------+-----+ *-| PostgreSQL | | scheduler *| +------------+ +------------+ V8 Isolates: Sandboxing with CPU (100ms) and memory (128MB) limits per worker. Cron Scheduling: Built-in support for 5 or 6-field cron syntax. Compatibility: Cloudflare Workers syntax compatible. Self-hosting Deployment is designed to be simple. A single PostgreSQL database and a single Docker Compose file is all you need. Why I built this This project has been evolving for about 7 years. I started experimenting with vm2 for sandboxing JS, then Cloudflare launched Workers and I got hooked on the model. When Deno came out, I switched to deno-core and ran on that for two years. Recently, with Claude's help, I rewrote everything on top of rusty_v8 directly. The goal has always been the same: run JavaScript on your own servers, with the same DX as Cloudflare Workers but without vendor lock-in. Your Data Never leaves your infrastructure Predictable Costs No per-request pricing No Lock-in Cloudflare Workers compatible Next up: Execution recording & replay for deterministic debugging.