Advantages of Content Distribution Network

A content delivery network (CDN) is used to reduce page load time. This is a free and easy-in-use service.

The idea is to provide static page files to the visitors as fast as possible and at the same time do not overload the server. This will also increase the execution speed of scripts.

CDN system consists of a group of caching servers. After activating the service, it is only necessary to change the path of the static files in a special subdomain, and all requests for static files will be redirected to the server's content delivery system. This server stores the information in a RAID array, which consists of solid state disks (SSDs). If the desired file is not found in the cache, the CDN server transmits the query to the master server to receive the file and store it in the cache afterward.

Most modern browsers can not make more than 10 connections to the server, so other static content retrieval processes must wait for the current processes to finish. And CDN systems allow accessing those files without a need to wait.

The following file extensions are supported: .jpg, .jpeg, .gif, .png, .ico, .css, .midi, .wav, .bmp, .js, .swf, .flv, .avi, .djvu, .mp3, .xml, .zip.

Some of the advantages of using the content delivery system are:

    • Reduction of the page load time - tasks are divided so that the HTTP server is only responsible for the operation of PHP scripts and the server delivers CDN static data. As a result, page load time can be 3-4 times reduced.
    • Top positions in search results - search engines like Google take into account the time the server takes to respond and display the results. After activating the free CDN service you will have an advantage in this regard.