This piece was originally written for the Gopher Academy advent series. We are grateful to them for allowing us to republish it here. Back when crypto/tls was slow and net/http young, the general wisdom was to always put Go servers behind a reverse proxy like NGINX. That’s not necessary anymore! At Cloudflare we recently experimented […]
Archive by Author
Cloudflare acquires Eager
In 2011 we launched the Cloudflare Apps platform in an article that first declared Cloudflare as “not … the sexiest business in the world.” Sexy or not, Cloudflare has since grown from the 3.5 billion pageviews a month to 1.3 trillion per month today. Along the way, we’ve powered more than a million app installations […]
Cloudflare Crypto Meetup #4: November 22
Come join us on Cloudflare HQ in San Francisco on Tuesday, November 22 for another cryptography meetup. We had such a great time at the last one, we decided to host another. We’ll start the evening at 6:00p.m. with time for networking, followed up with short talks by leading experts starting at 6:30p.m. Pizza and […]
TLS nonce-nse
One of the base principles of cryptography is that you can’t just encrypt multiple messages with the same key. At the very least, what will happen is that two messages that have identical plaintext will also have identical ciphertext, which is a dangerous leak. (This is similar to why you can’t encrypt blocks with ECB.) […]
Cloudflare Certifies Under the New EU-U.S. Privacy Shield
Cloudflare has certified with the U.S. Department of Commerce for the new EU-U.S. Privacy Shield framework. Beginning this summer, the U.S. Department of Commerce began accepting submissions to certify under the EU-U.S. Privacy Shield framework, a new mechanism by which European companies can transfer personal data to their counterparts in the United States. By certifying […]
Introducing Dedicated SSL Certificates
When we launched Universal SSL in September 2014 we eliminated the costly and confusing process of securing a website or application with SSL, and replaced it with one free step: sign up for Cloudflare. CC BY 2.0 image by JD Hancock When you complete the sign-up process, we batch your domain together with a few […]
Control your traffic at the edge with Cloudflare
Today, we’re introducing two new Cloudflare Traffic products to give customers control over how Cloudflare’s edge network handles their traffic, allowing them to shape and direct it for their specific needs. More than 10 trillion requests flow through Cloudflare every month. More than 4 million customers and 10% of internet requests benefit from our global […]
Amsterdam to Zhuzhou: Cloudflare network expands to 100 cities
We’re excited to kick off Cloudflare’s sixth birthday celebrations by announcing data center locations in 14 new cities across 5 continents. This expansion makes our global network one of the largest in the world, spanning 100 unique cities across 49 countries. Every new Cloudflare data center improves the performance, security and reliability of millions of […]
How we brought HTTPS Everywhere to the cloud (part 1)
CloudFlare’s mission is to make HTTPS accessible for all our customers. It provides security for their websites, improved ranking on search engines, better performance with HTTP/2, and access to browser features such as geolocation that are being deprecated for plaintext HTTP. With Universal SSL or similar features, a simple button click can now enable encryption […]
An overview of TLS 1.3 and Q&A
The CloudFlare London office hosts weekly internal Tech Talks (with free lunch picked by the speaker). My recent one was an explanation of the latest version of TLS, 1.3, how it works and why it’s faster and safer. You can watch the complete talk below or just read my summarized transcript. The Q&A session is […]

