More than a year ago, Ryan Kirkman and Thomas Davis approached us about a project they were working on. Dubbed CDNJS, the project had ...

A little over a month ago, we published a couple of blog posts about how we were making SSL faster. Specifically, we ...

About a month and a half ago, CloudFlare announced limited support for SPDY as part of a private beta. SPDY is the new protocol pioneered by ...

One of the things we don't talk about much at CloudFlare is how we've built one of the largest, fastest, easiest, and most resilient authoritative DNS networks in the world. A report from SolveDNS was just released that shows CloudFlare as the second fastest authoritative DNS provider, well ...

On HTTP, caching is done at the file level. A browser will cache the JPEG, CSS, and Javascript files on a page. However, the ...

CloudFlare recently rolled out a premium service called Railgun that's available to CloudFlare Business and Enterprise customers. Railgun is web optimization software that's designed to speed ...

HTTP, the protocol of the web, is unencrypted by default. That means it is trivial for someone using the same local network as you to spy on all the data you send to and receive from most websites. If, for example, someone sniffs your session cookie for a website then ...

Mobile web browsing is very different, at the network level, to browsing on a desktop machine connected to the Internet. Yet both use the very same protocols, and although TCP was designed to perform well on the fixed-line Internet, it doesn't perform as well on mobile networks. This post ...

(Image credit: markyharky)

This is the first in a series of posts looking at what makes ...

We want to acknowledge and thank the amazing team of engineers at NGINX. They have been working on a SPDY implementation for quite some time and their work made it possible for us to roll out ...