CDN –Content delivery network or Content Distribution Network
Is an arrangement of computers having copies of data placed on different nodes of a network for 100% content availability!!
Base Logic:
CDN nodes are usually deployed in multiple locations, each node operate on each other to satisfy requests for content by end users, moving the content transparently to optimize the delivery process.
When properly applied and implemented, it saves the latency time to download the data, use minimal bandwidth and high performance. Also best solution for server down issue. Provides increased reliability allows an CDN operator to deliver HD quality content with High Quality of Service within low cost and low network load. Some CDN providers even utilize TCP acceleration technology to further boost CDN’s performance and end-user experience.
Let’s say, if you have your website running on a remote server, if the server is down, obviously the site will be down. If applied the CDN concept to your website, you website would be registered to a CDN provider, where the copies of site information is available in different servers, whenever your server didn’t respond back, another nearest CDN server will respond and provide the request information from your website. It’s so great and have several benefits.
There are several free CDN providers such as google, Microsoft, cloudflare and several available. Most popular Javascript CDN providers were google and Microsoft.
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