Over the past few years, the CloudFlare blog has covered a great range of different topics, drilling down into the technology we use to both protect websites from attack, and optimise them so that they load faster for visitors. One thing we haven't spent enough time talking about
Load Balancing without Load Balancers
CloudFlare had an hour-long outage this last weekend. Thankfully, outages like this have been a relatively rare occurance for our service. This is in spite of hundreds of thousands of customers, the enormous volume of legitimate traffic they generate, and the barrage of large denial of service attacks we are
CloudFlare: Fastest Free DNS, Among Fastest DNS Period
CloudFlare runs one of the largest networks of DNS servers in the world. Over the last few months, we've invested in making our DNS as fast and responsive as possible. We were happy to see these efforts pay off in third-party DNS test results. The good folks at
How to Launch a 65Gbps DDoS, and How to Stop One
Yesterday I posted a post mortem on an outage we had Saturday. The outage was caused when we applied an overly aggressive rate limit to traffic on our network while battling a determined DDoS attacker. In the process of writing it I mentioned that we'd seen a 65Gbps
Prague, Czech Republic: CloudFlare's 20th Data Center
We just turned up our newest data center (#20) in Prague, Czech Republic. This comes hot on the heels of new data centers in Vienna, Toronto, Seattle, Atlanta, and Sydney. Vienna, which came online last week, is already handling a high volume of traffic from Eastern Europe. Prague will take