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Load Balancing - Grokking the System Design Interview

Cloud Hosting brought a revolution in the hosting field. It is considered by many to be the most efficient hosting solution for any website, especially for resource-intensive websites such as e-commerce. Also, its USP lies with scalability feature which gives complete control to the user to scale up their resources as per their needs. However, to benefit from the diverse features of Cloud Hosting, it is important to optimize it to reap in the full potential of the Cloud Hosting plan. One such method is to use a load balancer along with your Cloud Hosting plan to improve the website’s performance and speed. To understand how a load balancer works, it is important to know the mechanism of Cloud Hosting beforehand. 

How does Cloud Hosting work?

A Cloud Hosting infrastructure works on the principle of utilizing the power of the cloud and cloud storage to store your website data. The storing of data on multiple servers ensures advanced data protection, seamless data backup and automatic data recovery. Even if a server malfunctions, data can be fetched from other servers to be produced before the user’s browser. 

What is a load balancer?

Load balancer as the name suggests disperses the incoming load to multiple servers or to the available server to optimize website performance. A sudden surge in traffic can make a website lag or experience downtime. This is a common sight for e-commerce websites during peak hours or seasonal sales. The load balancer acts on an intermediate level between the internet and the server. When multiple requests are made from the users to access the website, the load balancer spreads out the workload to different cloud resources to optimize the performance of the server. This, in turn, processes HTTP requests in an orderly fashion, thereby reducing time-to-first-byte and increasing website speed consequently. 

Advantages of using load balancer on a cloud-hosted website

  1. Increases reliability: Your website may crash and experience downtime if there is a sudden surge in traffic. Although Cloud-Hosted websites guarantee a better uptime score over its traditional counterparts, a load balancer spreads the workload to different cloud servers preventing the website from any lag. 
  2. Improved scalability: During peak seasons, an e-commerce website may experience a sudden surge in traffic, which may lead to slower loading time for the website. With load balancing, one can expect a better loading time, as the resources are utilized properly. 
  3. Addresses security concerns: Not only does load balancer improve the website’s performance but also helps in improving the security of the website. It is extremely helpful in neutralizing DDoS attacks where a large volume of traffic is sent to victimize a machine. It channelizes the requests and acts as a buffer against such security threats.
  4. Improves website’s SEO: Load Balancer plays a great role in deciding the fate of a website’s search engine ranking. Google has included website loading time as one of the most important determining factors in its search engine algorithm. Also, website speed has a positive impact on user experience, which itself is part of SEO. Thus, load balancing of workload can help your website climb the search engine ladder. 

Conclusion

If you are on traditional hosting, it may be a good idea to get a load balancing service for your website. However, a Cloud-Hosted website is capable of handling huge traffic and offers greater reliability than other hosting types. Yet, a load balancer can be used with a Cloud-Hosted website to further optimize the performance and loading speed of the website.