Open sourcing our NGINX HTTP/2 + SPDY code
In December, we released HTTP/2 support for all customers and on April 28 we released HTTP/2 Server Push support as well. The release of HTTP/2 by CloudFlare had a huge impact on the number of sites supporting and using the protocol. Today, 50% of sites that use HTTP/2 are served via CloudFlare. CC BY 2.0 image by JD Hancock When we released HTTP/2 support we decided not to deprecate SPDY immediat
Announcing Support for HTTP/2 Server Push
Last November, we rolled out HTTP/2 support for all our customers. At the time, HTTP/2 was not in wide use, but more than 88k of the Alexa 2 million websites are now HTTP/2-enabled. Today, more than 70% of sites that use HTTP/2 are served via CloudFlare. CC BY 2.0 image by Roger Price Incremental Improvements On SPDY HTTP/2’s main benefit is multiplexing, which allows multiple HTTP requests to sha
The curious case of slow downloads
Some time ago we discovered that certain very slow downloads were getting abruptly terminated and began investigating whether that was a client (i.e. web browser) or server (i.e. us) problem. Some users were unable to download a binary file a few megabytes in length. The story was simple—the download connection was abruptly terminated even though the file was in the process of being downloaded. Af
Scaling CloudFlare's Massive WAF
I first heard John speak at the Nginx.Conf conference in San Francisco. He’s done an amazing job explaining a large scale, high volume WAF (Web Application Firewall) platform that he and his colleagues have built. In this interview he’ll explain design goals, benchmarking, testing and WAF rule new roll outs. The story here is really about performance and scale by optimizing every last drop out wit
Scaling out PostgreSQL for CloudFlare Analytics using CitusDB
Scaling out PostgreSQL for CloudFlare Analytics using CitusDB04/09/2015 When I joined CloudFlare about 18 months ago, we had just started to build out our new Data Platform. At that point, the log processing and analytics pipeline built in the early days of the company had reached its limits. This was due to the rapidly increasing log volume from our Edge Platform where we’ve had to deal with traf
Introducing CFSSL - CloudFlare's PKI toolkit
Today we’re proud to introduce CFSSL—our open source toolkit for everything TLS/SSL. CFSSL is used internally by CloudFlare for bundling TLS/SSL certificates chains, and for our internal Certificate Authority infrastructure. We use this tool for all our TLS certificates. Creating a certificate bundle is a common pain point for website operators, and doing it right is important for website security
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Introducing CFSSL 1.2