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CDN Blog

Articles related to Content Delivery Networks. News, tips, how-to and market developments.

10 Tips to Optimize CDN Performance

Apr 26 2017

What can you do to optimize CDN performance? Learn about ten ways to effectively enhance content delivery speed and reliability.

Faster Google Fonts with Preconnect

Apr 24 2017

Improve the speed and performance of Google Fonts. Learn what the preconnect hint is and how it works.

CDN behavior testing with Dummy Origin

Apr 5 2017

Dummy Origin makes it easier to evaluate the (caching) behavior of a CDN. Open source, easy to install and a joy to use.

Introducing CDN Guides

Mar 12 2017

CDN Planet introduces CDN Guides: informational articles about Content Delivery Network features like compression, purge and serve stale.

Root domain on CDN and performance

Mar 11 2017

When using your root/apex domain on a CDN, don't simply expect excellent performance.

Initcwnd settings of major CDN providers

Feb 13 2017

Initcwnd is one thing to tweak on the server to improve TCP performance. What is the initcwnd value of CDN providers? Find out what our tests in Feb 2017 show and learn how we tested.

How to protect your CDN origin server

Mar 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

Oct 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?

Oct 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?

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

Apr 25 2012

Turbobytes is a new and innovative multi-provider CDN platform that load balances amongst CDNs 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.

Google DNS, OpenDNS and CDN performance

Feb 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.

Announcing the Cloudfront Purge Tool

Jan 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

Jan 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.

Tuning initcwnd for optimum performance

Oct 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

Oct 11 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

Oct 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

Oct 4 2011

Since about 2:35pm EDT today, we noticed many sites that use Akamai go down. Akamai denies any outage at their end.

How to Select a CDN

Oct 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

Oct 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.