2026-04-02
The explosion of AI-bot traffic, representing over 10 billion requests per week, has opened up new challenges and opportunities for cache design. We look at some of the ways AI bot traffic differs from humans, how this impacts CDN cache, and some early ideas for how Cloudflare is designing systems to improve the AI and human experience....
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2025-09-29
Rust-powered core systems, post-quantum upgrades, developer access for students, PlanetScale integration, open-source partnerships, and our biggest internship program ever — 1,111 interns in 2026....
2025-07-17
This is part two of a story about how we overcame the challenges of making a complex system more scalable....
2025-07-10
This blog post is the first of a series, in which we share our journey in redesigning Quicksilver — Cloudflare’s distributed key-value store that serves over 3 billion keys per second globally. ...
2025-04-01
Following up on having the fastest purge in the industry, we have now increased Instant Purge quotas across all Cloudflare plans. ...
December 26, 2024 2:00 PM
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 ...
September 30, 2024 1:00 PM
Recapping all the big announcements made during 2024’s Birthday Week....
September 25, 2024 1:00 PM
Speed Brain uses the Speculation Rules API to prefetch content for the user's likely next navigations. The goal is to download a web page to the browser before a user navigates to it. ...
September 24, 2024 11:00 PM
We’ve built the fastest cache purge in the industry by offering a global purge latency for purge by tags, hostnames, and prefixes of less than 150ms on average (P50), representing a 90% improvement. ...
October 24, 2023 1:00 PM
Today, we're thrilled to share that Cache Rules, along with several other Rules products, are generally available (GA). But that’s not all — we're also introducing new configuration options for Cache Rules...
September 28, 2023 1:00 PM
We introduced integrations with Supabase, PlanetScale, Neon and Upstash. Today, we are thrilled to introduce our newest additions to Cloudflare’s Integrations Marketplace – Sentry, Turso and Momento...
June 01, 2023 1:00 PM
Regional Tiered Cache provides an additional layer of caching for Enterprise customers who have a global traffic footprint and want to serve content faster by avoiding network latency when there is a cache miss in a lower-tier, resulting in an upper-tier fetch in a data center lo...
September 27, 2022 1:00 PM
We have spent the last ten years learning how customers use Page Rules to customize their cached content, and it’s clear the time is ripe for evolving rules-based caching on Cloudflare...
August 12, 2022 4:30 PM
Cloudflare is uniquely positioned to help give crawlers hints about when they should recrawl, if new content has been added, or if content on a site has recently changed...
July 28, 2021 12:59 PM
When both Last-Modified and Etag headers are absent from the origin response, Smart Edge Revalidation will use the time the object was cached on Cloudflare as the Last-Modified header value. When ...
May 21, 2021 11:00 AM
A new set of HTTP response headers provide control over our CDN’s caching decisions. CDN-Cache-Control allows customers to control how our CDN behaves without affecting the behavior of other caches....
March 19, 2021 12:00 PM
Up until now, we wouldn’t cache requests with query strings until we saw them three times. We trace that behavior back to 2010, examine why we might have needed it, and show ourselves why we don’t need it anymore....
March 16, 2021 12:00 PM
We explored almost 200 websites with the activated Automatic Platform Optimization feature in Chrome User Experience Report data. Automatic Platform Optimization consistently demonstrated better aggregate performance among sites we analyzed in TTFB, First Paint, FCP, and LCP metr...
March 08, 2021 2:00 PM
We use Consul for service discovery, and we’ve deployed a cluster that spans several of our data centers. We were aware from the start that the DNS query latencies were not great from certain parts of the world that were furthest away from these data centers....
February 18, 2021 8:01 PM
Announcing a fundamental improvement to Argo Tiered Cache we’re calling Smart Tiered Cache Topology. When enabled, Argo Tiered Cache will now dynamically select the single best upper tier for each of your website’s origins while providing tiered cache analytics. ...
