cloudflare/workerd on Hacker News

…good argument (but most recommendations I see for iteration count are <1M). Constant defined here: https://github.com/cloudflare/workerd/blob/main/src/workerd/...

comment by kentonv · 2026-09-23 · in PBKDF2 has a 100k-iteration ceiling in Cloudflare Workers

…Workers Runtime is open source, so you could deploy it or your own machines, too, if you want: https://github.com/cloudflare/workerd

comment by kentonv · 2026-08-14 · in Self-hosted web push Cloudflare Worker, works on iOS

…here that is operationally easy to set up. (Basically: just connect all the nodes to NFSv4.) [0] https://github.com/cloudflare/workerd/pull/6780

comment by kentonv · 2026-08-06 · in Cloudflare OS: an open platform for agents, apps, and work

You beat us to it! Been meaning to land this but got distracted. https://github.com/cloudflare/workerd/pull/6780 But honestly I love that there are multiple implementations now.

comment by kentonv · 2026-08-05 · in Celld: Self-hosted, distributed Durable Objects

what is the difference between celld and Cloudflare Workers open source version workerd? https://github.com/cloudflare/workerd

comment by jitl · 2026-08-05 · in Celld: Self-hosted, distributed Durable Objects

…sourced [1]. I tried deploying it and had Deepseek v4 Flash create a dumb whiteboarding app. [1] https://github.com/cloudflare/workerd

comment by orakmoya · 2026-08-05 · in Cloudflare OS: an open platform for agents, apps, and work

…no big deal, but a company-wide instance might not work well. But I'm actually fixing that: https://github.com/cloudflare/workerd/pull/6780 Unfortunately didn't get enough time to land it before this release, but it'll come soon. With that…

comment by kentonv · 2026-08-05 · in Cloudflare OS: an open platform for agents, apps, and work

…https://github.com/cloudflare/cloudflare-os It runs on top of our open source runtime. https://github.com/cloudflare/workerd

comment by kentonv · 2026-08-05 · in Cloudflare OS: an open platform for agents, apps, and work

…https://github.com/cloudflare/cloudflare-os It runs on the open source Workers Runtime: https://github.com/cloudflare/workerd You can run it at home if you want. There's even a Home Assistant Gatekeeper.

comment by kentonv · 2026-08-05 · in Cloudflare OS: an open platform for agents, apps, and work

…[1] https://developers.cloudflare.com/workers/runtime-apis/conte... [2] https://github.com/cloudflare/workerd/blob/main/src/workerd/... [3] https://github.com/cloudflare/workerd/blob/main/src/workerd/...

comment by kentonv · 2026-07-06 · in Workers Cache

Yes, the Cloudflare Workers Runtime is open source: https://github.com/cloudflare/workerd You can definitely run workerd in production on your own machines and some people do. The biggest catch is that workerd's implementation of Durable…

comment by kentonv · 2026-06-07 · in Show HN: Kyushu – A self-hostable WASM sandbox for JavaScript workers

Workers runtime is open source and permissively licensed fwiw https://github.com/cloudflare/workerd

comment by switz · 2026-04-16 · in Cloudflare's AI Platform: an inference layer designed for agents

…Desktop Portal: https://wiki.archlinux.org/title/Bubblewrap#Using_portals > cloudflared/workerd: https://github.com/cloudflare/workerd : >> WARNING: workerd is not a hardened sandbox wasmtime-mte requires support for ARM64 Memory Tagging…

comment by westurner · 2026-02-19 · in Show HN: CSL-Core – Formally Verified Neuro-Symbolic Safety Engine for AI

…Cloudflare Runners also run WASM; with workerd: cloudflare/workerd : https://github.com/cloudflare/workerd ... "Cage" implements ARM64 MTE Memory Tagging Extensions support for WASM with LLVM emscripten iirc: - "Cage: Hardware-

comment by westurner · 2026-01-30 · in Show HN: Amla Sandbox – WASM bash shell sandbox for AI agents

…come with a big warning NOT to use it as a sandbox for untrusted code - here's the workerd one https://github.com/cloudflare/workerd?tab=readme-ov-file#war... and here's the PyMiniRacer section: https://bpcreech.com/PyMiniRacer/architecture…

comment by simonw · 2026-01-04 · in JavaScript engines zoo – Compare every JavaScript engine

There is a big "WARNING: This is a beta. Work in progress" message in https://github.com/cloudflare/workerd Specifically, half of the services operate locally, and the other half require CF services. I mainly use Claude Code to develop,…

comment by buremba · 2026-01-04 · in Show HN: OpenWorkers – Self-hosted Cloudflare workers in Rust

…: Classic, even Cloudflare workerd has "WARNING: workerd is not a hardened sandbox" in the README! https://github.com/cloudflare/workerd?tab=readme-ov-file#war...

comment by simonw · 2026-01-04 · in JavaScript engines zoo – Compare every JavaScript engine

Probably worth pointing out that the Cloudflare Workers runtime is already open source: https://github.com/cloudflare/workerd

comment by rozenmd · 2026-01-01 · in Show HN: OpenWorkers – Self-hosted Cloudflare workers in Rust

Cool project, great work! Forgive the uninformed questions, but given that `workerd` ( https://github.com/cloudflare/workerd ) is "open-source" (in terms of the runtime itself, less so the deployment model), is the main distinction here…

comment by tbrockman · 2026-01-01 · in Show HN: OpenWorkers – Self-hosted Cloudflare workers in Rust

…conflicts and no worry about blocking other queries. Extensions are easy to enable, file a bug on https://github.com/cloudflare/workerd . (Though this one might be trickier than most as we might have to do some build engineering.)

comment by kentonv · 2025-12-11 · in Python Workers redux: fast cold starts, packages, and a uv-first workflow

…CloudFlare", but for true compat you can probably also self host workerd itself which is open source: github.com/cloudflare/workerd

comment by som · 2025-12-05 · in Show HN: Pbnj – A minimal, self-hosted pastebin you can deploy in 60 seconds

…is only a part of the Cloudflare Workers stack. It doesn't have the same security properties. https://github.com/cloudflare/workerd#warning-workerd-is-not... (I know you know this, but frankly you should add a disclaimer when you comment…

comment by yencabulator · 2025-11-21 · in Head in the Zed Cloud

…source version of their Workers runtime[0], so the lock-in isn't as strong as it once was. [0]: https://github.com/cloudflare/workerd

comment by hobofan · 2025-11-11 · in Head in the Zed Cloud

The Cloudflare Workers runtime is open source: https://github.com/cloudflare/workerd People can and do use this to run Workers on hosting providers other than Cloudflare.

comment by kentonv · 2025-11-10 · in Head in the Zed Cloud

…workerd is a tailor-made runtime (equivalent level to deno/node/bun/etc.) it uses the V8 engine. https://github.com/cloudflare/workerd/blob/main/docs/v8-upda...

comment by laurencerowe · 2025-07-27 · in The many JavaScript runtimes of the last decade

…with node? Cloudflare Workers workerd comes to mind but it's fundamentally a different thing. https://github.com/cloudflare/workerd It's not meant to be a generalist backend runtime and it provides almost zero batteries.

comment by pier25 · 2025-05-20 · in Reports of Deno's Demise Have Been Greatly Exaggerated

https://github.com/cloudflare/workerd

comment by ameliaquining · 2025-05-11 · in Why not object capability languages?

…has a strong tradition of open source, even for core parts of their product, like workerd ( https://github.com/cloudflare/workerd ), and also maintains a bunch of key infrastructural libraries like quiche. They aim to compete with their…

comment by necubi · 2025-04-10 · in Arroyo (YC W23) has been acquired by Cloudflare

…some). I assume you are referring to V8 here but that also powers Deno. WorkerD is open source: https://github.com/cloudflare/workerd I personally am not a fan of Deno because of how it split the Node JS ecosystem, so that is not a benefit…

comment by sgammon · 2024-11-08 · in Edge Scripting: Build and run applications at the edge

…and Workers locally over the years. Eg: https://github.com/cloudflare/workers-sdk/issues/2964 https://github.com/cloudflare/workerd/issues/1897

comment by pier25 · 2024-09-28 · in Our container platform is in production. It has GPUs. Here's an early look

…an app on DO but decide you don't want to host it on Cloudflare, you can self-host it on workerd: https://github.com/cloudflare/workerd

comment by kentonv · 2024-04-05 · in Cloudflare acquires PartyKit to allow developers to build real-time multi-user

…look forward all the cool apps that people will now build with this! [1] https://pyodide.org/ [2] https://github.com/cloudflare/workerd/blob/main/docs/pyodide... [3] https://github.com/cloudflare/workerd/pull/1875 Edit: updated wording…

comment by syrusakbary · 2024-04-02 · in Python Cloudflare Workers

Would love feedback on which packages you'd like to see us support: https://github.com/cloudflare/workerd/discussions/categories...

comment by brendanib · 2024-04-02 · in Python Cloudflare Workers

For ref: - https://blog.cloudflare.com/workerd-open-source-workers-runt... - https://github.com/cloudflare/workerd

comment by grav · 2024-02-10 · in LLRT: A low-latency JavaScript runtime from AWS

…just to use this via their hosted edge platform. But then I wonder why I wouldn't just use https://github.com/cloudflare/workerd which is also open source. Surely that is fast enough? If not then it should show some benchmarks? I suppose…

comment by Nathanba · 2023-10-28 · in WinterJS

▲ 2

Cloudflare workers is adopting Ada URL parser

story by yagiznizipli · 2023-10-05 · 0 comments

i love how the main reference for workerd can be just one capnp file. https://github.com/cloudflare/workerd/blob/main/src/workerd/... this changed my world how i think about computing on the web. if there was just a good enough js library…

comment by jFriedensreich · 2023-07-28 · in Cap'n Proto 1.0

…Workers is C++. I would assume that a lot of the related things (KV, Durable Objects, etc) too. https://github.com/cloudflare/workerd

comment by yencabulator · 2023-07-21 · in A Decade of Rust, and Announcing Ferrocene

The equivalent here to kubernetes is workerd, it's open source https://github.com/cloudflare/workerd/ The platform that VPSes kubernetes uses run on though, all the big clouds have a proprietary one.

comment by gpm · 2023-05-29 · in Connect() – a new API for creating TCP sockets from Cloudflare Workers

A significant chunk of it is open source: https://github.com/cloudflare/workerd/

comment by dom96 · 2023-05-29 · in Connect() – a new API for creating TCP sockets from Cloudflare Workers

…been a pet desire of mine, and this could drastically slash the effort required to experiment. https://github.com/cloudflare/workerd It's awesome to see thr container model maturing. Much better runtime behavior here. And the ability to…

comment by rektide · 2023-05-12 · in Huawei Open Sources Kuasar, a Rust-Based Container Runtime

…of helping the competition. Example: we open sourced the entire runtime for Cloudflare Workers! https://github.com/cloudflare/workerd Open sourcing something has a cost and we mostly only open source things like stand-alone libraries. We…

comment by jgrahamc · 2023-03-10 · in Oxy is Cloudflare's Rust-based next generation proxy framework

…I'm having trouble triggering this in an observable way without writing a custom HTTP client. https://github.com/cloudflare/workerd/blob/5d644d0189246a22e... https://github.com/cloudflare/workerd/blob/5d644d0189246a22e... I also don't see…

comment by yencabulator · 2023-03-02 · in “The script will never generate a response” on Cloudflare Workers

Even the Worker runtime is open-source now: https://github.com/cloudflare/workerd

comment by rozenmd · 2023-02-15 · in Ask HN: What's a good open-source alternative to Cloudflare?

…much of the old stack build on nginx is gradually being migrated to Workers. https://workers.dev https://github.com/cloudflare/workerd In another part of the stack, there is Pingora, another built-from-scratch web server focused on…

comment by kentonv · 2023-02-08 · in What is a CDN? How do CDNs work?

You can self host the entire Worker runtime if you'd like: https://github.com/cloudflare/workerd

comment by rozenmd · 2022-10-23 · in Cloudflare Pages: Best server tech since CGI-bin?

The engine is open source: https://github.com/cloudflare/workerd We did not create our own engine to create "lock-in". On the contrary, it would be a huge win for us if we could simply run FastCGI or Node or whatever applications…

comment by kentonv · 2022-10-23 · in Cloudflare Pages: Best server tech since CGI-bin?

…[2] https://developers.cloudflare.com/pages/platform/functions#d... [3] https://wintercg.org/ [4] https://github.com/cloudflare/workerd

comment by ameliaquining · 2022-10-23 · in Cloudflare Pages: Best server tech since CGI-bin?

For Cloudflare Workers, it's no longer a joke either: https://github.com/cloudflare/workerd

comment by methyl · 2022-10-17 · in How to build software like an SRE

…to compile workerd [2] to wasm instead. [1] https://github.com/johnhenry/actually-serverless [2] https://github.com/cloudflare/workerd

comment by johnhenry · 2022-10-04 · in Postgres WASM