Improving Smart Tiered Cache for Public Cloud Regions
2026-07-10
Smart Tiered Cache allows for precise upper tier selection for origins hosted on AWS, GCP, Azure, and Oracle Cloud with customer-provided cloud region hints....
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Your Worker can now have its own cache in front of it
2026-07-06
We are launching Workers Cache, a regionally tiered cache that sits directly in front of your Worker entrypoints. Infinitely composable, configured via standard HTTP headers...
Our billing pipeline was suddenly slow. The culprit was a hidden bottleneck in ClickHouse
2026-05-14
When a partitioning change to our petabyte-scale ClickHouse cluster caused critical billing jobs to stall, standard metrics showed no obvious errors. This post explores how we identified severe lock contention in ClickHouse's query planner and built upstream patches to fix it....
Agents Week: network performance update
2026-04-17
By migrating our request handling layer to a Rust-based architecture called FL2, Cloudflare has increased its performance lead to 60% of the world’s top networks. We use real-user measurements and connection trimeans to ensure our data reflects the actual experience of people on the Internet....
Introducing Flagship: feature flags built for the age of AI
2026-04-17
We are launching Flagship, a native feature flag service built on Cloudflare’s global network to eliminate the latency of third-party providers. By using KV and Durable Objects, Flagship allows for sub-millisecond flag evaluation....
MORE POSTS
March 23, 2026
Launching Cloudflare’s Gen 13 servers: trading cache for cores for 2x edge compute performance
Cloudflare’s Gen 13 servers double our compute throughput by rethinking the balance between cache and cores. Moving to high-core-count AMD EPYC ™ Turin CPUs, we traded large L3 cache for raw compute density. By running our new Rust-based FL2 stack, we completely mitigated the lat...
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February 27, 2026
We deserve a better streams API for JavaScript
The Web streams API has become ubiquitous in JavaScript runtimes but was designed for a different era. Here's what a modern streaming API could (should?) look like....
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February 24, 2026
How we rebuilt Next.js with AI in one week
One engineer used AI to rebuild Next.js on Vite in a week. vinext builds up to 4x faster, produces 57% smaller bundles, and deploys to Cloudflare Workers with a single command....
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February 03, 2026
Improve global upload performance with R2 Local Uploads
Local Uploads on R2 reduces request duration for uploads by up to 75%. It writes object data to a nearby location and asynchronously copies it to your bucket, all while data is available immediately. ...
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October 21, 2025
A deep dive into BPF LPM trie performance and optimization
This post explores the performance of BPF LPM tries, a critical data structure used for IP matching. ...
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September 29, 2025
15 years of helping build a better Internet: a look back at Birthday Week 2025
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....
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September 26, 2025
Introducing Observatory and Smart Shield — see how the world sees your website, and make it faster in one click
We're announcing two enhancements to our Application Performance suite that'll show how the world sees your website, and make it faster with one click - available Cloudflare Dashboard!...
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September 26, 2025
Network performance update: Birthday Week 2025
On the Internet, being fast is what matters and at Cloudflare, we are committed to being the fastest network in the world....
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September 17, 2025
The RUM Diaries: enabling Web Analytics by default
On October 15th 2025, Cloudflare is enabling Web Analytics for all free domains by default—helping you see how your site performs around the world in real time, without ever collecting personal data....
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August 29, 2025
Troubleshooting network connectivity and performance with Cloudflare AI
Troubleshoot network connectivity issues by using Cloudflare AI-Power to quickly self diagnose and resolve WARP client and network issues....
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August 05, 2025
Reducing double spend latency from 40 ms to < 1 ms on privacy proxy
We significantly sped up our privacy proxy service by fixing a 40ms delay in "double-spend" checks....
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July 23, 2025
Building Jetflow: a framework for flexible, performant data pipelines at Cloudflare
Faced with a data-ingestion challenge at a massive scale, Cloudflare's Business Intelligence team built a new framework called Jetflow....
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April 09, 2025
Network performance update: Developer Week 2025
Cloudflare has been tracking and comparing our speed with other top networks since 2021. Let’s take a look at how things have changed since our last update....
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April 01, 2025
“You get Instant Purge, and you get Instant Purge!” — all purge methods now available to all customers
Following up on having the fastest purge in the industry, we have now increased Instant Purge quotas across all Cloudflare plans. ...
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March 07, 2025
Dynamically optimize, clip, and resize video from any origin with Media Transformations
With Cloudflare Stream’s new Media Transformations, content owners can resize, crop, clip, and optimize short-form video, all without migrating storage. ...
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