2023-03-31
Engineers at Cloudflare have improved the release procedure of our largest edge proxy server. The improved process allows us to significantly decrease the amount of memory used during the version upgrade. As a result, we can deploy code faster and more reliably...
Continue reading »
2023-02-24
Engineers at Cloudflare have written a replacement in Rust for one of the oldest and least-well understood parts of the Cloudflare infrastructure, cf-html, which is an NGINX module. In doing so we learned a lot about how NGINX works, and paved the way to move away from NGINX entirely....
2022-09-14
Today we are excited to talk about Pingora, a new HTTP proxy we’ve built in-house using Rust that serves over 1 trillion requests a day...
2020-03-19
You’d think keepalives would always be helpful, but turns out reality isn’t always what you expect it to be. It really helps if you read Why does one NGINX worker take all the load? first....
2020-03-18
Back when Cloudflare was created, over 10 years ago now, the dominant HTTP server used to power websites was Apache httpd. However, we decided to build our infrastructure using the then relatively new NGINX server....
October 17, 2019 2:00 PM
Just a few weeks ago we announced the availability on our edge network of HTTP/3, the new revision of HTTP intended to improve security and performance on the Internet. Everyone can now enable HTTP/3 on their Cloudflare zone...
May 22, 2019 5:14 PM
My team: the Cloudflare PROTOCOLS team is responsible for termination of HTTP traffic at the edge of the Cloudflare network. We deal with features related to: TCP, QUIC, TLS and Secure Certificate management, HTTP/1 and HTTP/2....
February 15, 2019 5:09 PM
In Part 1, the merits and tradeoffs of subdirectories and subdomains were discussed. The subdirectory strategy is typically superior to subdomains because subdomains suffer from keyword and backlink dilution. ...
February 15, 2019 5:09 PM
Alice and Bob are budding blogger buddies who met up at a meetup and purchased some root domains to start writing. Alice bought aliceblogs.com and Bob scooped up bobtopia.com....
November 29, 2018 9:54 AM
As TLS 1.3 was ratified earlier this year, I was recollecting how we got started with it here at Cloudflare. We made the decision to be early adopters of TLS 1.3 a little over two years ago. It was a very important decision, and we took it very seriously....
October 12, 2018 12:00 PM
Getting the best end-user performance from HTTP/2 requires good support for resource prioritization. While most web servers support HTTP/2 prioritization, getting it to work well all the way to the browser requires a fair bit of coordination across the networking stack....
July 31, 2018 3:00 PM
10 million websites, apps and APIs use Cloudflare to give their users a speed boost. At peak we serve more than 10 million requests a second across our 151 data centers. Over the years we’ve made many modifications to our version of NGINX to handle our growth. This is blog post i...
March 06, 2018 1:00 PM
One of our large scale data infrastructure challenges here at Cloudflare is around providing HTTP traffic analytics to our customers. HTTP Analytics is available to all our customers via two options:...
January 18, 2018 12:06 PM
Processor problems have been in the news lately, due to the Meltdown and Spectre vulnerabilities. But generally, engineers writing software assume that computer hardware operates in a reliable, well-understood fashion, and that any problems lie on the software side of the softwar...
December 11, 2017 2:00 PM
Six years ago when I joined Cloudflare the company had a capital F, about 20 employees, and a software stack that was mostly NGINX, PHP and PowerDNS (there was even a little Apache). ...
November 07, 2017 10:15 AM
In a recent blog post we discussed epoll behavior causing uneven load among NGINX worker processes. We suggested a work around - the REUSEPORT socket option....
October 23, 2017 12:57 PM
Scaling up TCP servers is usually straightforward. Most deployments start by using a single process setup. When the need arises more worker processes are added. ...
November 28, 2016 2:10 PM
If you have experienced HTTP/2 for yourself, you are probably aware of the visible performance gains possible with HTTP/2 due to features like stream multiplexing, explicit stream dependencies, and Server Push. ...
May 13, 2016 9:55 AM
In December, we released HTTP/2 support for all customers and on April 28 we released HTTP/2 Server Push support as well....
May 09, 2016 8:17 AM
On March 9, 章亦春, known to most of us as agentzh, organized the first Bay Area OpenResty Meetup at CloudFlare's San Francisco office....
