Performance

Could we get more cache space with the same hardware? We prototyped compression inside Cloudflare's cache to find out.

Aashi Patel

Five Rust-level memory optimizations to the DNS cache layout of Big Pineapple cut per-entry memory by 56%, freeing approximately 100 TB of memory across Cloudflare's fleet.

Sebastiaan Neuteboom

We migrated the Cloudflare Blog to EmDash to prove our stack at massive scale. Here is how we stress-tested performance, safely routed production traffic, and redesigned the frontend experience.

Kody Jackson, Diogo Carneiro, and Amy Dutton

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.

Chenxi Zhang

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

Dan Lapid and Connor Harwood

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.

James Morrison and Christian Endres

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.

Lai Yi Ohlsen

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.

Rohan Mukherjee and Abhishek Kankani

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 latency penalty to unlock twice the performance.

Syona Sarma, JQ Lau, and Jesse Brandeburg

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.

James M Snell

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.

Steve Faulkner

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.

Frank Chen, Rahul Suresh, and Anni Wang

This post explores the performance of BPF LPM tries, a critical data structure used for IP matching.

Matt Fleming and Jesper Brouer

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.

Nikita Cano and Korinne Alpers

On the Internet, being fast is what matters and at Cloudflare, we are committed to being the fastest network in the world.

Lai Yi Ohlsen

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!

Tim Kadlec, Brian Batraski, and Noah Maxwell Kennedy

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.

Alex Krivit and Tim Kadlec

Troubleshoot network connectivity issues by using Cloudflare AI-Power to quickly self diagnose and resolve WARP client and network issues.

Chris Draper and Koko Uko