In today’s era, speed is the real meaning of any development. From hi-tech automobiles to rocket science to smartphones all are trying their best to get more speed in their own eco-systems and humans also strive to achieve them.
In web world, it takes the same face ― we have to provide anything on our website faster than before. So, as a website owner, it is one’s basic need and condition that never to be compromised. To follow that, a Content Delivery Network or Content Distribution Network (CDN), like Cloudflare, is one of the most needed online services in the web developing world. Although there are many other CDN services available online, but we will recommend Cloudflare CDN Services for its reliability, availability and easy interface. Further more, it comes up with a packed up basic plan which is totally free of cost.
What is CDN?
A content delivery network (CDN) refers to a geographically distributed group of servers which work together to provide high availability and fast delivery of Internet content.
How CDN Works?
At its core, a CDN is a network of servers linked together with the goal of delivering content as quickly, cheaply, reliably, and securely as possible. In order to improve speed and connectivity, a CDN will place servers at the exchange points between different networks. In fact, these servers from all around the world make a cluster of servers that is known to us as “Cloud Service,” like Google Cloud, Microsoft OneDrive cloud storage, Amazon AWS Cloud, IBM Cloud and etc. If one of these cluster servers breaks down then another healthy server takes place of it, giving an uninterrupted sevice to its users. In one sentence, Cloud Service is the future of all kinds of online storage systems and hosting services.
The Basic Concept of A CDN Network:
The globally distributed nature of a CDN means reduce distance between users and website resources. Instead of having to connect to wherever a website’s origin server may live, a CDN lets users connect to a geographically closer data center. Less travel time means faster service.
To improve the speed more, a CDN server temporarily stores cache data of your website from the origin server and provides these data to your website visitor when it needs. It’s also possible that your website’s orgin server is down but visitor is still able to view your site through a CDN server’s cache data.
You can also build a security firewall as well as deploy an SSL (HTTPS) protection around your origin server through the CDN servers to resist the attacks from harmful visitors, hackers and malicious bots.
To say, CDN servers are like the bodyguards of your origin server who protect you and really do care for you and your real visitors.
How CDN helps?
Improving website load times: By distributing content closer to website visitors by using a nearby CDN server (among other optimizations), visitors experience faster page loading times. As visitors are more inclined to click away from a slow-loading site, a CDN can reduce bounce rates and increase the amount of time that people spend on the site. In other words, a faster a website means more visitors will stay and stick around longer.
Reducing bandwidth costs and CPU usages: Bandwidth consumption costs and CPU usage for website hosting are the primary concerns for a website owner, especially for them who love to stay within limited hosting plans or free hosting plans. Through caching and other optimizations, CDNs are able to reduce the amount of data an origin server must provide, thus reducing hosting costs and CPU usage for website owners.
Increasing content availability and redundancy: Large amounts of traffic or hardware failures can interrupt normal website function. Thanks to their distributed nature, a CDN can handle more traffic and withstand hardware failure better than many origin servers.
Improving website security: A CDN may improve security by providing DDoS mitigation, improvements to security certificates (like SSL, means HTTPS), and other optimizations.
CDN uses SSD over Tradisional HDD To Store Data: How Does It Improve Your Website Performance?
As far as CDN hardware optimizations are concerned, a substantial benefit comes from the use of solid-state hard drives (SSD) over traditional hard disk drives (HDD); solid-state drives can open files up to 30% faster than the traditional hard disk drive and are more resilient and reliable.
Akin to a record player, a traditional hard disk drive consists of a spinning circular metal disc with a magnetic coating that stores data. A read/write head on an arm accesses information when the disc spins underneath it. This process is mechanical, and is affected by how fast the disc spins. With the advent of solid-state drives, the older model of hard drives has become less commonly used, though they’re still produced today and are in wide circulation in many computer systems.
A solid-state drive (SSD) is also a form of persistent storage, but functions much more similarly to USB thumb drives or the memory cards commonly found in devices like digital cameras; there are no moving parts. If a regular hard disk is spinning and the system is jostled, the HDD may skip, resulting in read/write errors and potential downtime.
Another important SSD benefit is in accessing fragmented files. File fragmentation is a situation where parts of a file are in different locations across the disk, resulting in slower access for HDD drives. Because a SSD can access non-contiguous memory locations efficiently, fragmentation is not a threat to performance.