Kenton Varda

2025-09-26

It turns out we've all been using MCP wrong. Most agents today use MCP by exposing the "tools" directly to the LLM....

• 
  Kenton Varda
• 
  Sunil Pai

2025-09-22

Cap'n Web is a new open source, JavaScript-native RPC protocol for use in browsers and web servers. It provides the expressive power of Cap'n Proto, but with no schemas and no boilerplate....

• 
  Kenton Varda
• 
  Steve Faulkner

2024-09-26

Traditional cloud storage is inherently slow because it is accessed over a network and must synchronize many clients. But what if we could instead put your application code deep into the storage layer...

• 
  Kenton Varda

2024-04-05

Cloudflare Workers now features a built-in RPC (Remote Procedure Call) system for use in Worker-to-Worker and Worker-to-Durable Object communication, with absolutely minimal boilerplate. We've designed an RPC system so expressive that calling a remote service can feel like using a library...

• 
  Kenton Varda

2024-04-01

Bindings don't just reduce boilerplate. They are a core design feature of the Workers platform which simultaneously improve developer experience and application security in several ways. Usually these two goals are in opposition to each other, but bindings elegantly solve for both at the same time...

• 
  Kenton Varda

2022-09-27

workerd is the JavaScript/Wasm runtime code that powers Cloudflare Workers, now open source under the Apache 2.0 license...

• 
  Kenton Varda

2022-01-14

Recently, we made an optimization to the Cloudflare Workers runtime which reduces the amount of time Workers need to spend in memory. We're passing the savings on to you for all your Unbound Workers...

• 
  Kenton Varda
• 
  Erwin van der Koogh

2021-10-19

On the Workers team, we have a policy: A change to the Workers Runtime must never break an application that is live in production....

• 
  Kenton Varda

2021-10-12

Cloudflare worked with TU Graz to study the impact of Spectre on Cloudflare Workers and to develop new defenses against it. Today we're publishing a paper about our research....

• 
  Kenton Varda

2021-08-03

When multiple clients access the same storage concurrently, race conditions abound. Durable Objects can make it easier. We recently rolled out improvements to Durable Objects that automatically correct many common race conditions while actually making your code faster. ...

• 
  Kenton Varda

2021-04-17

Today, we’re thrilled to announce that we’re exploring a new type of service at the edge: containers. If you have a use case for running containers at our edge, we’d love to know about it!...

• 
  Kenton Varda
• 
  Rita Kozlov

2020-09-28

Durable Objects provide a truly serverless approach to storage and state: consistent, low-latency, distributed, yet effortless to maintain and scale. They also enable coordination and real-time collaboration between clients....

• 
  Kenton Varda

2020-07-29

Cloudflare is a security company, and the heart of Workers is, in my view, a security project. Running code written by third parties is always a scary proposition, and the primary concern of the Workers team is to make that safe....

• 
  Kenton Varda

2018-10-01

Today, we're extending Cloudflare Workers with support for WebAssembly. All Workers customers can now augment their applications with WASM at no additional cost....

• 
  Kenton Varda

2018-03-13

We believe the true dream of cloud computing is that your code lives in the network itself. Your code doesn't run in "us-west-4", it runs everywhere....

• 
  Kenton Varda

2017-10-23

I have a weird setup. I type in Dvorak. But, when I hold ctrl or alt, my keyboard reverts to Qwerty. You see, the classic text-editing hotkeys, ctrl+Z, ctrl+X, ctrl+C, and ctrl+V are all located optimally for a Qwerty layout....

• 
  Kenton Varda

2017-09-29

You see this everywhere, but as a lifelong gamer, my personal favorite example is probably graphics cards. In the '90s, graphics hardware generally provided a fixed set of functionality. ...

• 
  Kenton Varda