How to protect your CDN origin server
March 18, 2013
How can you protect your CDN origin servers from malicious attacks, incl. DDoS attacks? We describe a few options, with one being the clear winner.
Real-world CDN performance for Google DNS and OpenDNS users
October 18, 2012
Number 3 in a series of 3 blog posts gives insight in the relative performance the CDNs deliver to Google DNS and OpenDNS users in different countries.
Which CDNs support edns-client-subnet?
October 17, 2012
Number 2 in a series of 3 blog posts: what is edns-client-subnet, how is it relevant to CDN performance and which CDNs currently support it?
Google DNS, OpenDNS and CDN performance
October 16, 2012
In the first of a series of 3 blog posts, find out how popular the Google Public DNS and OpenDNS services are in countries across the globe based on millions of real-user tests.
A better CDN Finder
May 29, 2012
Our easy to use and popular CDN Finder tool has been rebuilt from the ground up, resulting in much better results. Read about the changes we made, how it is built and how the user benefits.
How to test your CDN before go live
May 1, 2012
When turning on a CDN for your site, make sure to test your config/setup actually works. If you don't, you can be in big trouble. We show you 4 ways to do this testing and number 1 is clearly not our favourite...
Turbobytes: multi-CDN made easy
April 25, 2012
Turbobytes is a new and innovative multi-provider CDN platform that load balances amongst providers based on performance, enabling publishers, webshops and others to get optimal performance worldwide. Great pricing, a friendly Cancel-Anytime policy and no need for your own contracts with several CDNs.
Announcing the Cloudfront Purge Tool
January 23, 2012
Currently, you cannot purge files from Cloudfront via the AWS console, which means you always have to do it via the API. The Cloudfront Purge Tool, a Chrome extension, takes away the hassle of using the AWS API, and enables you to quickly purge one or more files. Yes, it is secure.
How to do an effective trial with a CDN
January 11, 2012
You are in the process of selecting a Content Delivery Network and have a shortlist of candidates. Next step: do a trial with them. How can you best do a trial with a CDN? Read our tips.
Initcwnd settings of major CDN providers
November 14, 2011
Two weeks ago we published a blog post titled "Tuning initcwnd for optimum performance" that showed how tuning the initial congestion window parameter (initcwnd) on the server can have a significant improvement in TCP performance. We now publish that follow up post we promosied, with data on the initcwnd setting for various CDN providers.
Tuning initcwnd for optimum performance
October 25, 2011
Tuning the initial congestion window parameter (initcwnd) on the server can have a significant improvement in TCP performance, resulting in faster downloads and faster webpages. Get an in-depth understanding of TCP slow start and how to tune for performance.
Browser cachability issues with CloudFront
October 10, 2011
In this post, I intend to illustrate some potential issues with browser cachability when using Amazon CloudFront and some possible work-arounds. These are some issues all CloudFront users should be made aware of. Sending stale responses to users may have a big impact on user experience.
Compare CDNs, side-by-side
October 10, 2011
By popular demand, we now provide an easy way to compare two CDNs, side-by-side on a single page. No bells, no whistles, just all the useful info about the CDNs.
Many Akamai customers suffer outage
October 4, 2011
Since about 2:35pm EDT today, we noticed many sites that use Amakai go down. Akamai denies any outage at their end.
How to Select a CDN
October 3, 2011
Your goal is to select the Content Delivery Network that is a perfect fit with your needs and requirements. Learn about the 4 categories of selection criteria (functionality, performance, costs and service) and read our tips on how to effectively and efficiently go through the selection process.
Cloudfront, nginx and gzip: not that simple
October 3, 2011
Cloudfront's request to origin servers are marked as HTTP/1.0. By default nginx does not send gzipped response to a HTTP/1.0 request. gzip_http_version setting should be set to 1.0 for it to work correctly.