Why Is it Necessary to Incorporate a CDN Into Any Website?
Why Is it Necessary to Incorporate a CDN Into Any Website?
CDN is a great way to increase conversion rates and make your website prominent. Here's how implementing CDNs can improve your site.
Join the DZone community and get the full member experience.Join For Free
xMatters delivers integration-driven collaboration that relays data between systems, while engaging the right people to proactively resolve issues. Read the Monitoring in a Connected Enterprise whitepaper and learn about 3 tools for resolving incidents quickly.
A CDN is an arrangement of distributed networks that delivers output in the form of web content to the user. It is also known as a Content Delivery Network and is dependent on the geographical location of the user, webpage origin, and server. It is an effective way of decreasing the time of content delivery with enhanced security. It is effective for sites that either have a global reach or higher traffic. CDNs are placed across the globe after strategic planning to deliver static content to the users at a faster pace. When a user searches for a particular site, the request gets lodged at the closest CDN edge server. It not only depletes the latency but also enhances the speed of the site.
Catering to the Dynamic Needs
The users prefer prompt service and always look up to the sites that offer the latest and best experience. Hence, it is important to incorporate fresh technologies in order to evolve even in a highly competitive market. The challenge is to present an information-packed content within fraction of a second to live up to the expectations. This is the point where CDN plays an important role. It was found in a survey that among the top 10,000 websites, nearly half of them rely on CDN.
Architecture of CDN
Primarily CDN consists of two components, PoPs, or Points of Presence, and edge servers. They are:
- PoPs- It is basically the geographical location of the CDN servers. It is distributed equally across the globe to cover a huge area and offers excellent service.
- Edge Servers- Each PoP has its server called edge server, which is basically a simple proxy cache. It has the similar functionality of the cache of a web browser. It helps retain a copy of the content in the cache rather than creating content for the same.
The distribution of PoPs depends up on the CDN. Some of the service providers prefer offering a few but robust PoPs and some vice versa. However, the architecture of a particular CDN can be understood by the location and density of the PoPs. The geographical location of the user also contributes to the quality of the architecture.
Functionality of the CDNs
The pages of a particular website are copied to the servers which are located at diversified locations, caching the contents. After a request is initiated from the user’s end, the nearest server responds to the same to reduce the response time. CDN acts as a medium that transfers the information from the website’s server to the closest server. It also aids in communicating any content that is not cached. These activities take place swiftly, without letting the users realize the same. Let us consider two scenarios where one website functions with CDN and one without:
The presence of CDNs allows the storage of static data of the web page near the geographical location of the user. When these are distributed equally across the entire globe, the accessibility becomes seamless and prompt.
The physical location carries a great importance when the response rate is concerned. Hence, if the CDNs are absent, then the websites, irrespective of their physical location will connect to a master server. This will take a huge amount of time depleting the user experience and user-friendliness.
Uncompressed large image files
Incompetent CSS delivery
Huge number of animated or video files
Slower web host
Extreme usage of plug-ins
These are diversified reasons that add to increasing the time of delivery to the clients. CDN is the best and the most cost-effective solution of these concerns.
Benefits of Opting for CDN
Irrespective of the size of a firm, the website or blog site plays a key role in recognition. Hence, it is important to keep it up-to-date with instantaneous delivery to ensure maximum returns.
CDN offers great benefits mentioned below:
- Performance- CDN helps enhance the performance by reducing the lag and caching the contents. It is also proved that the websites with CDN are three times faster than the ones without CDN.
- Security- As the traffic is distributed among the numerous CDNs and is not restricted to a dedicated server, the security enhances. SSL certs can be implemented to encrypt the edge server and origin server.
- Scalability- The static content is the major contributor of any web page; hence, the rest of the portion gets delivered easily. Scalability distributes the traffic that drains the downtime significantly.
- SEO Enhancement- Page loading speed is an important algorithm that adds to the Search Engine Optimization. Hence, the ranking of the website also gets a boost with the implementation of CDN.
- Dependability- After a request is routed to the nearest server, if unavailable, it gets redirected to the next available server. This makes it a failproof way of accomplishing any activity.
- Cost-effective- The self-managed infrastructure of a CDN make it easily manageable and affordable. The payment to web host based on the bandwidth also gets reduced drastically with the caching of contents.
CDN is a great way to increase conversion rates and make your website prominent. People get attracted to high-performing web pages that are robust. This not only satisfies the customers but also accentuates the rank in the search engines. Hence, CDN is the only solution to elevate the performance of high-trafficked websites in an economical way.
Opinions expressed by DZone contributors are their own.