What is CDN and How CludFlare will help you to boost your web application?

CDN is short for content delivery network. A content delivery network (CDN) is a system of distributed servers (network) that deliver pages and other Web content to a user, based on the geographic locations of the user, the origin of the web page and the content delivery server.

A Content Delivery Network (CDN) consists of two components: The Origin Server(s) – where the content to be distributed over Internet is originally stored & Cache Server(s) – where the content is duplicated. There is generally one Origin Server (either in the customer’s data center or in the cloud, with the content delivery network service provider – for example) and many cache servers (in multiple locations across the globe) so that, when a consumer is requesting a particular content on the Internet, it can be served by a cache server nearest to the consumer’s geographical location if the content is available there. Other wise, cache server fetches the content quickly from the origin server after protocol/route optimizations.

CDNs provide the following services

Serving the content from the closest possible geographic location to minimize network latency.
Replication (Caching) and deployment of large number of servers to minimize the server latency.
Capacity On Demand.
Monthly charges as per the content delivery (without high initial investments).
Application Acceleration, Compression, Protocol optimization, etc.
Route optimization (to identify and route traffic through the best/shortest/least congested route between origin server and cache servers.
Static/ Dynamic/ Encrypted content optimization and faster delivery.

Free CDNs that have a Forever-Free Plan

CloudFlare. CloudFlare is popularly known as the best free CDN for WordPress users.
Incapsula
Photon by Jetpack
Swarmify
AWS Cloudfront
Google Cloud CDN
Microsoft Azure CDN
Cloudinary.

The attached picture sows the basic pricing of Cloudflare services. Like this other CDNs also have their pricing.

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