The Cloudflare Blog

If you want to know what cache revalidation is, how it works, and why it can involve rolling a die, read on. This blog post presents a lock-free probabilistic approach to cache revalidation, along

How I used Workers AI to translate Cloudflare Stream’s auto-generated captions and what I learned along the way.

From Christmas Eve dinners in Europe to New Year’s Eve countdowns in Asia, Cloudflare data reveals how global festivities have typically shaped Internet usage and cultural rhythms

Cloudflare observed a 4x increase in bot-related traffic on Black Friday in 2024. 29% of all traffic on our network on Black Friday was Grinch Bots wreaking holiday havoc.

In 2024, as elections took place across over 60 countries, the Internet became both a battleground for cyberattacks and a vital platform for democratic engagement.

Want Claude to interact with your app directly? Build an MCP server on Cloudflare Workers, enabling you to connect your service directly, allowing Claude to understand and run tasks on your behalf.

Bring ChatGPT to your next video meeting with Cloudflare Calls. 

As threats evolve, SOC teams must adapt their operations. With Cloudflare’s holistic approach to managing user-based risk, SOC teams can operate more efficiently and reduce the likelihood of a breach.

Internationalization and localization require more than translation: tone, images, date/time and number formatting, among other items, need to be considered.

Today, the AI Audit dashboard gets an upgrade: you can now quickly see which AI services are honoring your robots.txt policies and then automatically enforce the policies against those that aren’t.

The 2024 Cloudflare Radar Year in Review is our fifth annual review of Internet trends and patterns at both a global and country/region level.

The 2024 popular Internet services landscape highlights rising generative AI, e-commerce shifts, and the continued dominance of platforms like Google and Facebook, as revealed by Cloudflare’s rankings

How significant are Cyber Week shopping days on the Internet? Is it a global phenomenon? Does E-commerce interest peak on Black Friday or Cyber Monday, and are attacks increasing during this time?

On November 14, 2024, Cloudflare experienced a Cloudflare Logs outage, impacting the majority of customers using these products. During the ~3.5 hours that these services were impacted, about 55% of the logs we normally send to customers were not sent and were lost. The details of what went wrong and why are interesting both for customers and practitioners.

If we plot the metrics associated with large DDoS attacks observed in the last 10 years, does it show a straight, steady increase in an exponential curve that keeps becoming steeper, or is it closer to a linear growth? Our analysis found the growth is not linear but rather is exponential, with the slope varying depending on the metric (rps, pps or bps).

Two recent cable cuts that occurred in the Baltic Sea resulted in little-to-no observable impact to the affected countries, in large part because of the significant redundancy and resilience of Internet infrastructure in Europe.

We used Cloudflare’s Developer Platform and Durable Objects to build authentication and a WebSockets API that developers can use to call AI Gateway, enabling continuous communication over a single

Cloudflare customers can now create Account Owned Tokens , allowing more flexibility around access control for their Cloudflare services. Additionally, Zaraz Automation Actions streamlines event tracking and third-party tool integration.

We describe how Cloudflare uses a custom Lisp-like programming language and formal verifier (written in Racket and Rosette) to prevent logical contradictions in our authoritative DNS nameserver’s behavior.

NIST has standardized four post-quantum signature schemes so far, and they’re not done yet: there are fourteen new candidates in the running for standardization. In this blog post we take measure of them and discover why we ended up with so many PQ signatures.