Content Delivery Network Process with Real-Time Examples

• In this article you will learn:
• 1.What Is CDN?
• 2.How Does CDN Work?
• 3.The Advantages of Using a CDN.
• 4.Types of CDN.
• 5.CDN in Cloud Computing Career.
• 6.Conclusion.

What Is CDN?

• A content delivery network (CDN) is the geographically dispersed network of a servers and data centers. The goal of a CDN is to facilitate increased a web performance and high availability by locating a web content copies closer to the end-users.
• CDN servers are often referred to as the “edge servers” since all CDN servers are be located on “edge network” — closer to end-users than a host server from which can application or website originates.
• CDN servers store or cache the copies of differentweb content subsets from the host server, such as applications, video, audio, images and HTML files. The content are delivery network by bringing a web content nearer to end-users, allows website publishers to control bandwidth consumption, reduce load times and provide an enhanced performance.
• Content delivery networks are currently serve over 50 percent of a world’s web traffic. The percentage keeps rising as a more and more enterprises expand their reach to newer markets and offer a more diverse types of content. Companies are typically purchase content delivery network services from a content delivery network providers, who manage and keep their network of servers.

How Does a CDN Work?

Let’s use an example to get the clearer understanding of a how CDN works. For instance, have a website on server based in Australia. Now, if an end-user accesses a website from France, content delivery network will serve a user from a France-based edge server – closest to an end-user – instead of serving a request from the origin server in an Australia. This improves the application performance, ensures a fast content loading and also boosts user experience.In addition to the minimizing a gap between the end-users and web content the content delivery a network distributes a traffic load as well so that traffic requests do not overwhelm single server.

The Advantages of Using CDN:

Improved Scalability and Connectivity:

In addition to facilitating an end-users with faster load times, which translates into the greater user experience, a content delivery network also rewards web publishers with an increased traffic, higher page views, lower site abandonment, and a stronger customer engagement.

Decreased Bandwidth Consumption:

Web hosting companies are charge businesses for any data they can transfer from origin servers. A content delivery network by storing a web content copies closer to end-users ensures less data transfer from an origin servers thereby reducing an enterprise costs and bandwidth consumption.

Lower Latency:

Typically, an end-user requests for data and system transfers it in a response. Latency is a lag between the request and response, which increases as a distance between the end-users and servers widens. Since a CDN servers are onnetwork edge- nearer to end-users – they reduce latency, optimizing performance.

Effective Traffic Spike Management:

Viral videos, limited-time discounts, or successful marketing campaigns can cause an unexpected and abrupt increase in demand for material. Content delivery networks use load balancing to distribute demand across web servers, preventing traffic surges from harming website performance.

Enhanced Cybersecurity:

A content delivery network employs an automation and data analytics tools that help to identify a firewall issues, MITM threats, and a DDoS attacks.

Amplifies a User Satisfaction:

A Media playback issues, unresponsive applications, and slow load times are primary reasons that make an end-users avoid/abandon particular websites. A content delivery network minimizes a performance issues, which boosts can user satisfaction.

Accelerated eCommerce:

A content delivery network facilitates a quicker payment approvals, the faster product page loading, and seamless transactions on a mobile and desktop devices, enhancing a shopping experience. CDN also enables a B2B and B2C eCommerce retailers to deliver the applications and content speedily, even during times of a high traffic.

Types of a CDN:

For a website visitors, the type of a content delivery network hardly matters. What matters to users is a performance, reliability, and security. However, for a webmasters, the type of a CDN is important. Below are CDN types webmasters use.

Peer-to-Peer Content Delivery Network:

This CDN technology leverages a Peer-to-Peer (P2P) protocol that users of µTorrent are somewhat are familiar with. Besides µTorrent many NGOs and big corporations like a AT&T, use the P2P method for the web content distribution. In a P2P content delivery technique, caching is not involved. Here end-users are part of a CDN, who simultaneously upload a web content components while downloading or accessing live-streaming. Because of a lower resource and hardware usage, number of a CDN providers, including a Freecast, PPS.tv and PeerCast offer free Peer-to-Peer services.

Push CDN:

The Push CDN methodology refers to the content delivery network type where origin servers manually or automatically, send a web content to CDN servers directly. Content is cached on a CDN servers unless it is purged or be deleted. The core concept of a Push CDN is that webmasters are responsible for the sending content to a CDN servers. The content they “push” is a content that will be delivered to the visitors when the system receives a request.

Pull CDN:

Exactly an opposite of Push CDN in a Pull CDN content delivery networks are be responsible for “pulling” web content that is a served to end-users once a request is be received. In a Pull CDN environment webmasters allow content to remain on a origin servers but rewrite URLs so they point to the CDN servers. When a user makes request the CDNs “pull” web contenfrom origin servers and deliver it. A CDN servers then cache a web content until its expiration.

CDN in Cloud Computing Career:

• Today’s consumers crave flexibility, simplicity, and speed of a cloud-based services, but they are disinclined to the compromise the scalability, security, performance and reliability offered by the content delivery network.
• Keeping that in a mind, leading Cloud service providers, including the Amazon Web Services, Google Cloud Platform, and a Microsoft Azure are integrating a CDN s into their cloud computing tools and platforms to be facilitate consistent performance and ease of management to users.
• The integration of a content delivery networks into the cloud platforms is latest technology trend that, according to the numerous reports, will further widen an existing talent gap in a cloud computing domain and drive demand for a skilled personnel to new heights.
• To effectively address a talent shortage, Amazon, Google, and Microsoft are placing less emphasis on a academic degrees, and are instead opting to hire a certified cloud professionals who have deep understanding and on hands-on experience of a cloud computing processes.

Conclusion:

Access the Internet by a smartphone tablet or computer it is natural for to notice differences in a speed, reliability and user experience of various applications and websites.Why do some websites are keep crashing while there are be countless others that deliver a superior performance in similar situations? Well performance differs because of a CDN.