Best Way To Scale Your Blockchain Application In K8 Using HPA

Overview

Building a scalable Blockchain decentralized application is not an easy task because developing a blockchain-based application needs too many services and applications to deploy on a server. If you want to deploy your blockchain application with high availability system, we need to clarify that our infrastructure is scalable. It is because if there is an increase in traffic on your application, and at the same time, your infrastructure is not ready to serve that mush request. It gives a worse impact on the user experience.

Why do we need a scalable infrastructure?

Let's suppose there is an increase in traffic on your blockchain application, and at the same time, your cloud infrastructure is not ready to serve that many requests and gives a bad user experience. It affects your overall business because you miss the golden opportunity. Thus, this is the reason we need to create an automated scalable infrastructure for your DApps.

How does Horizontal pod Autoscaling work?

Today everyone is deploying their application on Kubernetes because it's easy to manage and scalable. But most people don't know how to deploy blockchain applications with automated horizontal pod autoscaling on Kubernetes, which is the trickiest part. Not to worry, we'll let you know how pod autoscaling work when you enable pod autoscaling in your Kubernetes deployment. It simply monitors the application CPU and memory utilization. So, whenever your CPU or memory utilization crosses a threshold (Let's suppose I have set an 85% threshold), our traffic increases on our application. If the utilization limit touches the threshold value, Kubernetes automatically launches another replica pod. Thus this is the way pod scaling works, and that's the beauty of the k8 cluster.

Here is the sample deployment file with Horizontal pod auto-scaling, and you can customize this manifest file based on your application.

deployment_file.yaml

Conclusion

Deploying your application on Kubernetes with Horizontal pod autoscaling is a good practice because I am sure that you always want your application to be highly available and automatically scalable. With fault tolerance, there is another vertical pod autoscaling feature available in Kubernetes. Thus we will talk about VPA in another blog.