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Latest — Feb 1, 2025

Getting deeper understanding of React-Redux by building it myself

This post was originally written by me here: https://exploremanish.blogspot.com/2020/06/getting-deeper-understanding-of-react.html From the past few days, I have been playing with react and I am loving the framework. React makes it painless for me to create interactive UIs. Designing simple views for each state in

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Design Process to make it better

This post was originally written by me here: https://exploremanish.blogspot.com/2020/11/design-process-to-make-it-better.html I have been working on the ColoredCow employee portal for over the past three months or so. For the last two weeks, I have been working on designing the processes and automation to make

Migration from Paperclip to Active Storage

This post was written by me originally here: https://www.elitmus.com/blog/technology/migration-from-paperclip-to-activestorage/ How we migrated hundreds of thousands of attachments from Paperclip to ActiveStorage without downtime. At eLitmus, recently we migrated thousands of attachment records from Paperclip to Rails-owned ActiveStorage. Paperclip and Active Storage solve similar problems

Sidekiq process in production with Systemd and Monit

This post was originally written by me here: https://www.elitmus.com/blog/technology/sidekiq-process-in-production-with-systemd-and-monit/ Recently, we have upgraded our Sidekiq version from 5.2 to 6.5. Before Sidekiq 6.0 we were managing the Sidekiq process directly using Monit. With the release of Sidekiq 6, the team has

The revamp of a Video Proctoring Solution: A Behind-the-Scenes Look

This post was originally written by me here: https://www.elitmus.com/blog/technology/the-revamp-of-a-video-proctoring-solution-a-behind-the-scenes-look/ The story of how we took a good platform and made it even better Background For the past few months, the number of test takers and clients at eLitmus has increased significantly. Conducting all of

Demystifying Rails 7 System Tests: Configuring CI Pipeline

This post was originally written by me here: https://www.elitmus.com/blog/technology/demystifying-rails-7-system-tests-configuring-ci-pipeline/ In Rails 5.1 and later versions, system tests were introduced as a new type of test to simulate a user interacting with a web application. These tests use a headless browser, typically powered by

An in-depth look at Database Indexing

This post was originally written by me here: https://www.elitmus.com/blog/technology/an-in-depth-look-at-database-indexing/ In this article, we will explore Database Indexing. We will begin by installing the Docker & running a Postgres container on it. Subsequently, to execute queries and comprehend how the database uses various indexing strategies,

Automate starting and stopping AWS EC2 instances

As a software engineering team, we are working with Amazon EC2 instances on a daily basis While EC2 instances are great for running applications and services but its important to properly manage our instances to avoid unnecessary costs and resource consumption. One way to do this is by automating the

How to Deploy with Docker to AWS EC2 or lightsail instance (Docker + Nginx + Letsencrypt + Postgres)

Learn how to deploy your applications using Docker on AWS, specifically on EC2 or Lightsail instances! In this beginner-friendly tutorial, I’ll guide you through setting up a Docker deployment on Amazon’s cloud platform using a simple script. Perfect for developers and DevOps beginners looking to deploy web apps

How to Pick and Install Your First Linux Distro (Ubuntu 22.04)

Hey there, future Linux enthusiast! So, you’ve decided to take the plunge into the world of Linux—awesome! Whether you’re looking for a new way to use your computer, want to explore programming, or just want to break away from your usual operating system, Linux has something for