Why You Should Use a CDN?

What is a CDN?

A CDN stand for Content Delivery Network. It allow your website to delivery content to your audience Faster. It’s a hub server also called POP worldwide. They are mean to deliver static content and also dynamic sometimes of your website content: JavaScript, CSS and Video content as well.

How does a Content Delivery Network works?

When you register you name domain you use a registrar or directly on your hosting system like Siteground, Hsotinger, Godaddy and many others and you can choose if you want the server to be in North America, Canada, France, UK, or Shangai for exemple. SO it is “physicaly hosted” in a specific location. 

Therefore when a user from Asia fo instance want to access your website from America, there will be a delay time from you origin server to deliver all content to the user request and though probably get a higher traffic. this time delay mean the time needed from the server to transfer data.  Far the distance is the longer users will have to wait. If your website take longer then 3sec maximum to load then consider the user to stop visiting your website.

This is the time you need a CDN. because Content Delivery network are located worldwide you skip that time delay to deliver content faster by using the closer server to the user.

Most user think A CDN is so complex to understand that they hold to register to one and so use them for their website. But it’s not that complicated and adding a CDN for your website in addition to a cache system you will be able to reduce the TTFB, FCP, TI, LCP, onload time to make your website faster

How to register to a CDN?

First Step: you have to register on a CDN provider like Cloudflare, Sucuri, KeyCDN, Rackspace, GoogleCloudCDN and others. You can do it with your gmail account, it is secure and fast. For exemple let’s take Cloudflare and you register on this CDN.

Second Step: You add your website on the windows, Cloudflare will then proceed to access it and get the CNAM, DNS and other important information

Then You will have To change the DNS on you hosting systm to point them both to the Domain Name Server from Cloudflare. You will probably have to wait some hours from the DNS to be transfer. And that is it! You are register on a CDN and you will be able to see a significant difference in your website speed. 

The best way is to combine the CDN with a caching system on your wordpress if you use this CMS, WP rocket is a good one for it.

Like that when users are visting your website from all over the world, The content will be charged from the closest CDN possible reducing the loading balance. Better user experience.

How can I know if my CDN is good?

A CDN is a system of computer that work together to deliver a content fast. You can check if your CDN is working fine by checking the loading time of your website with GTmetrix or PageSpeed from Google. If you do not notice a significant difference between before and after you installed the CDN then you might change to another one.

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