Vivek Kumar
Upgrading RDS MySQL 8.0 to 8.4 broke our auth and the “easy fix” is gone
AWS sent the end-of-support email for MySQL 8.0. Upgrade to 8.4 or pay for Extended Support. I assumed this was a snapshot-and-click job. It took most of a week, almost…
Things I Learned Using AI to Ship Backend Features Faster
I have been using Cursor heavily for the past few months for building report exports, caching layers, workflows, POS features, storefront fixes. Stuff that actually has to work correctly, not…
AWS Cost Optimisation Techniques for EC2, S3, CloudFront & RDS
Your AWS bill is too high. Here is exactly what to do about it. EC2: S3: CloudFront: RDS: Conclusion:
Why We Added Redis + Sidekiq to Our Rails 5 App
Problem: Users were hitting Submit and waiting 2-3 seconds. Not because our DB was slow but because our controller was doing too much inline: sending emails, firing Slack notifications etc…
Observability in Our Rails 5 App with New Relic
Running Rails 5 on AWS EC2, Bundler, Sidekiq & PostgreSQL. The Problem We had logs. We had uptime checks. But we had to figure out which endpoint is slow, why…
Optimising DB Queries the right way in Rails
Our APIs were getting slow, servers were overloading under peak traffic and we had occasional downtime. Here is what we did to fix it. Why we needed this? 1. Add…
How I Protected Jenkins with Cloudflare Access (No VPN, No Tunnel)
If Jenkins is exposed to the internet then it is a nightmare. Open ports, brute-force attempts, credential stuffing, it is a target the moment it is reachable. So, I needed…
Let’s Integrate Camaleon CMS into a Rails Application
Problem: The conventional approach of running a WordPress blog on /blog via a separate Nginx config introduces session inconsistencies, UI fragmentation and maintenance overhead. This guide shows how to integrate…
How to Set Up Jenkins CI/CD on AWS EC2 with CentOS 7
So I recently set up a Jenkins server on AWS from scratch. I configured the EC2 instance, installed all the dependencies and set up the CI pipeline. I’m documenting everything…
AWS CloudTrail Explained: Monitor and Audit User Activity Easily
What is CloudTrail? AWS CloudTrail is a service provided by AWS that one can use for operational and risk auditing, governance, and compliance of the AWS account. Actions taken by…