Origin Pull CDN vs. Push CDN

Different providers may offer content delivery network services, or CDN services. They all work in the same way.

A web visitor is a person who attempts to open a website by sending a request via the Internet. To speed up the transmission, the request is not sent to the origin server. Instead, it’s sent to the closest CDN Point of Presence server (PoP).

The PoP server will then deliver a cached copy of the web page to any device being used by the visitor.

This solves the latency problem as not all requests must travel to the host server. Instead, most will be diverted towards PoP servers. This also solves problems like handling too many traffic.

This is how CDN services generally work. However, there are two types of CDNs that pull web page data from the source server.

These are the Origin Pull CDN, and Push CDN

What is Origin Pull CDN and how do you define it?

Origin Pull is the name of the PoP server that will pull the web page data from the origin server. When a web request has been made, the CDN will decide which content will be provided to the visitor.

It works like this: Well, you, the website owner or developer, will be the one responsible for leaving the content on the host origin server and you are the one who will rewrite URLs so that it points to the CDN.

The moment a web request has been made, the PoP server pulls the web data and other elements from your web page’s origin host server. The PoP server will cache this version until it expires, or is deleted from the server.

When should Origin Pull CDN be used?

Origin pull CDN has the advantage of being easy to configure. It’s the PoP Server that does the bulk of the heavy lifting. You can also save server space by only pulling data when there’s a request.

It can lead to problems if you don’t update your Time to Live settings regularly or forget to delete your PoP servers. It can lead to redundant traffic as web page data is re-queried, even though they have been changed.

Origin Pull CDN may sometimes be slower than expected, particularly if the page is being requested for the first-time. This is because the PoP server will be pulling data directly from Origin before delivering the content.

What is Push CDN?

Push CDN is, however, the complete opposite to Origin Pull CDN. The content is delivered by the PoP server in Pull CDN. Push CDN is all about you, the developer or website owner.

Instead of waiting for the PoP server pull web page data upon a request, you can push the content you desire on the PoP servers before any request is made. These contents, along with their data and elements, will be stored until deleted or purged.

Push CDN allows you to be the dictator. The web visitor will see the content you have pushed to the PoP server when they make a request.

Why choose Push CDN?

Push CDN is more difficult to set up and configure, but it’s much more flexible when it comes time to deliver the right content to the right place at the right moment.

This is a simpler way to do things, and there’s no room for error in content delivery.

What is the difference between Origin Pull CDN and Push CDN?

This is not a comparison that says one method is better than another. Each method has its advantages and disadvantages and you as the owner must decide which one you prefer to get data into PoP servers.


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