Introducing Rollbacks for Workers Deployments
April 03, 2023 2:00PM
Deployment rollbacks provide users the ability to quickly visualize and deploy past versions of their Workers, providing even more confidence in the deployment pipeline...
A debugging story: corrupt packets in AF_XDP; a kernel bug or user error?
January 16, 2023 1:46PM
Deep Dive Linux Networking DebuggingA race condition in the virtual ethernet driver of the Linux kernel led to occasional packet content corruptions, which resulted in unwanted packet drops by one of our DDoS mitigation systems. This blogpost describes the thought process and technique we used to debug this complex issue....
Debugging Serverless Apps
July 05, 2018 2:00PM
Serverless DebuggingThe Workers team have already done an amazing job of creating a functional, familiar edit and debug tooling experience in the Workers IDE. It's Chrome Developer Tools fully integrated to Workers. `console.log` in your Worker goes straight to the console, just as if you were debugging locally!...
The Curious Case of Caching CSRF Tokens
December 13, 2017 2:00PM
Cache Everything Page Rules SaaS Speed & Reliability HTTPSIt is now commonly accepted as fact that web performance is critical for business. Slower sites can affect conversion rates on e-commerce stores, they can affect your sign-up rate on your SaaS service and lower the readership of your content....
This is strictly a violation of the TCP specification
August 12, 2016 2:03PM
Tips TCP DebuggingI was asked to debug another weird issue on our network. Apparently every now and then a connection going through CloudFlare would time out with 522 HTTP error....
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