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November 28, 2012 8:21 PM
Choosing a Two-Factor Authentication System
We've been thinking about how to best implement two-factor authentication to better protect our customers' accounts for quite some time now. When, about 6 months ago, my account was targeted by hackers the importance of a good account security became clear. ...
August 28, 2012 5:44 PM
Turning "I'm Under Attack" into "I'm Doing Some Good"
CloudFlare's I'm Under Attack mode allows our customers to, at the click of a button, tell us that they are experiencing an attack and enable automatic protection. It works by slowing down visits to the web site that's under attack and performing extra work to identify malicious ...
August 05, 2012 7:33 PM
Always Online v.2
The video on CloudFlare's home page promises that we will keep your web page online "even if your server goes down." It's a feature we dubbed "Always Online" and, when it works, it's magical. The problem is, Always Online doesn't always work....
July 14, 2012 5:51 AM
Introducing: Single File Cache Purge
CloudFlare has supported a way to purge your cache for the last year. Unfortunately, it was all or nothing. While that, for practical purposes, didn't cause a significant performance hit for most websites....
July 03, 2012 7:00 AM
Making Edge Side Includes (ESI) Automatic and Easy
On HTTP, caching is done at the file level. A browser will cache the JPEG, CSS, and Javascript files on a page. However, the HTML of most pages is dynamically generated. As a result, the pages cannot be cached. ...
July 02, 2012 5:44 AM
Caching the uncacheable: CloudFlare's Railgun
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 up the delivery of content that cannot be cached....
June 28, 2012 6:48 AM
Why mobile performance is difficult
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. ...
June 07, 2012 12:38 AM
Introducing: CloudFlare Business and Enterprise
Over the last 18 months, the CloudFlare team has been busy building massive scale across hundreds of thousands of websites. As our network continues to grow, it becomes smarter, giving us insight into website security and performance that no other company has....
June 06, 2012 2:08 AM
Introducing Mirage: Automatic Responsive Web Design via Intelligent Image Loading
Yesterday, we announced Polish, which helps to automatically optimize the images on your site and increase performance. Today we're releasing something more ambitious: a system to automatically manage the loading of images in order to maximize your site's performance which we cal...
June 04, 2012 11:08 PM
Introducing Polish: Automatic Image Optimization
Today, the average web page has more than 85 objects (images, Javascript, CSS, etc.) that make up more than 750 KB of data. All that data needs to be downloaded when a page loads. On the average web page, more than 50% of the data is made up of images. ...
June 01, 2012 11:55 PM
Taming BEAST: Faster, Safer SSL now on CloudFlare
For some time, the vast majority of the web has been vulnerable to the so-called BEAST SSL attack. The attack was first demonstrated in 2011, and more than 90% of the Internet including large sites like Google.com remain vulnerable to their SSL sessions being decrypted....
April 11, 2012 11:12 PM
Introducing: I'm Under Attack Mode
CloudFlare provides a broad level of protection from a wide range of attacks. We do this while minimizing false positives or annoyances to legitimate customers. CloudFlare didn't begin as a DDoS mitigation service, but we've rapidly found that we are good at it....
April 11, 2012 1:21 PM
ScrapeShield: The scaled up, deep intelligence anti-scraping service
Months before I joined CloudFlare as a programmer I signed up for the company's service to protect my blog from hackers, spammers and scrapers. I saw an instant reduction in the amount of spam, an enormous decrease in hacking attempts, and a halt to the bots that scrape site cont...
April 10, 2012 10:33 PM
CloudFlare's New UI: Managing DNS records
We have released a number of changes to the site to make things easier to find and locate. Since making changes to existing DNS records and adding new ones are vitally important to site owners, we thought it would be helpful to craft a blog post showing the changes to the DNS edi...