CDN: What is it and how to create it?

CDN has a stronghold on all of us! We are all users, not just business people, and we engage with CDNs every day. Without it, content delivery would not be as efficient as it is now. Each image, video, content, etc., is served via a CDN. If this got you excited and want to learn more, you’re in the right place. So, let’s start.

What does CDN mean?

CDN is the short abbreviation of “Content Delivery Network.” What does it mean? It’s a server network covering a vast geographic area and has specific server locations. The goal is to comprehensively protect the territory from which potential tourists may originate. 

Every server on a network is referred to as a PoP or Point of Presence. This is because they all have data for users of specific locations in their cache memory. It’s a service that you can use in addition to your primary web hosting. 

CDN – Why is it important?

In what way does it work?

The principle is straightforward. DNS resolvers are on their way, analyzing the DNS request. They will provide the IP address of the closest cache server based on the request’s source. Some service providers refer to them as delivery nodes. Those DNS servers are strategically located in various areas. You can have numerous depending on your DNS provider, and you may be able to place even more in your most critical location.

Depending on your provider, you can employ a service GeoDNS instead of standard DNS. It allows you to assign specific IP addresses to different locations. You won’t send all of your traffic to the same place this way. You’ll be able to identify the required quantity of web hosting servers.

How to create a CDN?

If you wish to create even a primary content delivery network, you’ll need the following items:

  1. To begin, you’ll need a domain name or a subdomain.
  2. Second, there should be at least two servers in different places. You can use virtual or dedicated servers.
  3. Last but not least, there’s the GeoDNS utility. When you use it, visitors who request the domain are routed to the server that is nearest to them.

Why is it beneficial?

CDN is very useful. Here are some of its most significant advantages:

  • It helps to handle high loads of traffic (load balancing) efficiently. So, it aids in efficiently handling heavy traffic loads, surges, and network congestion. It can stand up to a lot of traffic without breaking down.
  • It protects against DNS downtime or also known as DNS outage. Using Anycast DNS, you may improve the availability of your CDN service. For instance, if a server goes down due to routine maintenance, a failure, or an attack, the requests will be routed to another server. 
  • CDN could increase the speed. Because content delivery network PoPs are located on IXPs, you benefit from increased speed and a strategic location. All of a visitor’s questions will travel a lot less. A shorter distance equals a speedier outcome.


The speed of a website is one of the most essential factors in determining its effectiveness. You might receive performance improvements and a better user experience using CDN. If you give it a chance, it will not disappoint you. So, please don’t spend any more time and put it into action in your system.

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