How CDN Works
Distance to your visitors is the key aspect
Classical Set-Up Without CDN
The classical set-up is that you have a website at one location (one server) in the world. If all your visitors are near to that location then it is usually a well working set-up because all your visitors are being served at a short distance from your server.
But what if you have visitors from around the world?
But what if you want to target global audience? What if your customers are spread around the whole world? Then there is a natural problem. The speed of communication between your server and visitors' browsers through the Internet is very high (approx. 70% of the speed of light) but still it is limited, and on big distances such as the distance between New York and Tokyo or London and Sydney your server is simply too far from your visitors to serve your website flawlessly and your website is slow for far visitors and it is not good for your business. To target global audience you need more servers, you need more points of online presence because you need your website content close to your visitors.
Moreover, there are SEO problems too. Google rankings of your website at countries far from you are not as good as they could be because just like your visitors also Google takes latency (speed) of your website as the key factor for ranking.
Content Delivery Network (CDN) Architecture
Moreover, all our CDN edge servers are connected to the fastest and most robust networks of the Internet and they are equipped exclusively with the fastest SSD drives which will increase your online performance even more.
How Does CDN Work?
When a visitor requests your CDN content via a CDN domain name (e.g. cdn.mycompany.com) our DNS engine directs the visitor to the CDN edge server that is closest to the visitor. This ensures significantly faster responses of your website to any visitor from any country in the world.
On the distance over the Atlantic Ocean CDN can cut loading time of your website by 5 seconds. It is indeed an essential difference due to the fact that 80% of people leave a website if it is not loaded under 3 seconds (and 57% of those people will never return).
How Is Content Uploaded to CDN?
Your content is automatically pulled from your website (or your CDNsun storage) by our CDN edge servers at the moment when it is requested by your visitors.
When your visitor requests your CDN content, then the content is automatically pulled from your server (if it is not already cached), then it is served (by a CDN edge server) to the visitor, and then it is cached (stored) on the edge server, and all subsequent requests to that edge server are served from its CDN cache.
How to Set Up CDN?
For majority of website solutions such as Wordpress, Magento, Joomla, Drupal, etc. you just need to follow few simple steps. Please take a look at our CDN integrations.
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