Definition: CDN

The CDN network refers to a collection of computers located in several geographic locations, but which work together. The Content Delivery Network is a group of servers whose purpose is to quickly distribute Internet pages. Discover this configuration in much more detail.

CDN is a commonly used set of servers

Not to be confused with a host, a CDN system is a collection of computers that work in a coordinated manner. The purpose of this remote network is to quickly distribute Internet content. These are mainly HTML pages and JavaScript files. Then, the feed also consists of stylesheets, images and videos.

The Content Delivery Network enjoys constant popularity. Indeed, Web 2.0 mainly relies on this type of network. Yes, Facebook, Amazon or Netflix themselves use this method. The list of CDN advantages is quite long, but it is above all the protection it offers which makes it a structure appreciated by Internet players. This is a great way to protect against DDoS hacks.

Security is maintained at the highest level thanks to TLS/SSL certificates. Which makes authentication and encryption more reliable. All these features don’t slow down the flow. Like the Cloudflare network, CDNs reduce requests to the origin server. This also reduces the demand on bandwidth.

Content Delivery Networks complement hosting providers

To say that a CDN is just a host with geographically dispersed computers would be too simplistic. Moreover, this network does not store any content. It does not exclude the need to use traditional web hosting. The objective is not to save, but rather to increase the velocity of a heavily visited website.

It is especially the most popular platforms that use CDN so that their pages are displayed quickly. It uses caching to reduce hosting bandwidth. This helps avoid service interruptions while minimizing vulnerability. This is an alternative solution for hosts who are experiencing a certain slowdown.

When a host is attacked by a hacker, the service may be temporarily interrupted. The CDN network provides the solution thanks to intelligent failover in the event of disconnection following a hardware malfunction. The flow is ensured by the operational servers. If the data center encounters a technical problem, Anycast routing redirects the Internet user to another.

A geographically closer computer network reduces latency

The efficiency of the CDN comes from the exchange points placed between several networks. These IXPs are where Internet Service Providers pass the baton. Networks improve the transfer of data between the standard client and server. Operators who specialize in this service have data centers in strategic locations around the world. In addition to speed, this relocation reduces Internet network congestion.

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When an Internet user has to wait until the pages of a site load, they tend to lose patience after a few seconds. CDN services reduce the abandonment rate by reducing latency. The client connects to the nearest server. Geographic proximity accelerates opening.

A CDN optimizes the operation of the IT equipment, but also improves software engineering. It provides load balancing and lightweighting of SSD drives. Although CDNs do not store data, they allow it to be delivered quickly to the end user. This speed is achieved through minification, file compression, exploitation of TLS/SSL certificates and TLS False Start functionalities.

Some advantages of CDN networks

It is especially websites with many sections and high visits that need CDN networks. That said, all Web players benefit from these computers scattered in 4 corners of the planet. Here are the main concrete advantages:

  • Improved page loading times on a site.
  • Reduction in bounce rates, i.e. abandonment rates.
  • Increased browsing time on the same address.
  • Reduced bandwidth costs.
  • Reducing data served from an origin server using caching.
  • Savings on the cost of hosting a site.
  • Improved content availability
  • Invulnerability to hardware failures due to origin server failures.
  • Mitigation of hacker attacks with better processing of security certificates.

How to understand everything about web performance?

After having seen together in this blog article, the definition of what a CDN is, we will now see together, how to understand everything about it. web performance ? Indeed, web performance is a relatively important criterion for improving the user experience on a website. A site with a modern and refined design but which, however, has a very slow loading speed, can encourage visitors to flee this site as quickly as possible, to go to the competition. So to avoid this, it is important to take an interest in web performance.

However, which website shares reliable, trustworthy sources on the CDN and web performance ? In order to understand everything from a web performance point of view, we invite you to click on this link now. Indeed, by going to this blog article, you will have access to all the essential information on the web performance, as well as these different advantages and disadvantages. So don’t hesitate any longer, and educate yourself properly, in order to have a fluid, fast website, where visitors can have a good user experience!