Video streaming is trending stuff that is causing exponential growth in the content delivery network market. According to a survey, by 2022, 72% of the internet traffic will cross CDNs which was 56% in 2017. It clearly signifies the upcoming wave of CDNs taking over the internet by the end of 2022. Created from an interconnected group of servers and deployed across the globe, a CDN ensures lightning-fast speed and high-quality access to everything. Here we will discuss everything about CDNs and why it is critical to live video streaming in 2022.

What is a CDN?

The expanded form of CDN is a content delivery network or content distribution network. It is a system of interconnected servers geographically distributed across the world for transporting media files. CDNs remove the hassle of traffic that could result in delivering the content from a single server by distributing the text, image, and video data from multiple locations across the world.

Additionally, the edge servers share the whole burden with the origin server. Instead of sending requests of each user viewing the stream to the server, the cloud CDN server nearest to them provides the content and processing power. 

How does a CDN work?

Ever thought about how your package is shipped so quickly? A CDN works on the same principle. Think of the headquarter of the packaging company as the origin server and its distribution servers as edge servers. When you place an order, the distribution centre that is nearest to your location tries to fulfil your demand. If the distribution centre has the product then it will ship it to you else it will send a request to another distribution centre. 

Similarly, when you stream a video from a CDN, the nearest edge server close to you tries to deliver it. The server will either have the required files cached or it will send requests to another server consisting of the files.

What is stored in CDN?

The contents of a CDN depend on the setup. In most CDNs, you can configure things as “cache” which is the copy of your assets stored on the server. Additionally, “no-store” in case data is only sent through. The setup is taken care of by the content provider, the entity that contracts with the CDN, not with the end user accessing the services.

What is a CDN in the cloud?

A CDN in the cloud is a content delivery network that smoothens the process of media distribution. On the cloud server, everything is instantly delivered through the internet. Using the CDN you can rapidly deliver content to your users and reduce the serving costs simultaneously. 

What is a CDN used for?

The content delivery networks are used for the distribution of content from your website or mobile app to online users in a quick and effective manner according to their geographical location. The CDN service provider keeps a cached version of your site's content in the multiple Points of Presence (PoPs). Every PoP is made up of multiple servers, in charge of caching your site’s content and distributing it to your visitors.

Types of CDNs

Almost all the well-known websites use one or more CDNs. Popular websites like Google, Facebook, and Amazon have exclusive CDNs and everyone specialises in a particular type of service they provide. Platforms like Netflix that make video content, an in-house network is created for streaming known as video CDNs. Additionally, some commercial CDNs are highly suitable for static websites. However, others focus on specific regions like CDNvideo for Russia, Alibaba for China, and GS Neotek for South Korea and Asia. The choice of CDN depends on the tasks you are performing and the goal you want to achieve. 

Benefits of using a CDN for live video streaming in 2022

CDNs are creating superhighways to deliver video streams rapidly and effectively to the end-users by connecting servers across the globe. Moreover, it shares the workload across the network of servers to improve the scalability and increase the viewership.

Advantages of streaming with a CDN includes:

Scalability & Redundancy

Scalability is one of the biggest reasons why everyone opts for CDNs. It is one of the fastest and most genuine ways to circulate your content among numerous views across the world. CDNs can retain a large number of audiences and viral watchers spikes.

Quality

CDN allows you to achieve the best user experience while streaming. It minimises the buffering and delays by employing rapid superhighways to send streams to a wide range of audiences across the world.

Speed

CDNs quickly distribute the content to the end-users. Content delivered across the servers is not blocked by the local network conditions or long distances between the user and server. It helps in delivering the content at a fast pace.

Pocket-Friendly Infrastructure

Most mega giants make their own global network of servers but it is not practical for most content distributors. CDN services allow businesses to outsource content distribution and save on infrastructure and maintenance costs.

How does a video CDN work?

As stated above, a CDN is a network of servers that are placed strategically across the world to share the video streams rapidly. As soon as the stream is gone live or posted, it circulates across the world. When the user plays the video, the CDN located near it delivers the stream. After the stream has been started, the media files are ready for more users in the same area.

What is an example of a CDN?

CDNs are used to cache content and deliver it to the end-user, reducing the page load time. The content should be cached on the CDN edge for longer durations. For example, your CDN has stored a piece of information that you were viewing on the internet.

Conclusion

The CDN is an evolving technology that simplifies the process of content distribution. Nowadays, the majority of companies are creating their own CDNs for easy delivery of content to their end-users across the world. Using CDNs is an effective way of doing live streams in an efficient manner across the world.