Bharathvaj articles - 39 total
Understanding the punycode Deprecation Warning in Node.js
If you’ve seen this warning in your Node.js application recently you're not alone. In this post,...
Avoiding the God Object - A Guide to Better Software Design
In software design, a God Object (or God Class) is a class that knows too much or does too much. It's...
Quartz CRON Explained
At work, I recently encountered Quartz CRON — a more powerful and flexible version of the classic...
Mastering CRON Expressions - A Developer's Quick Guide
CRON expressions are powerful tools for scheduling tasks — from backups to emails — across servers,...
How Generators improves performance ?
In modern software systems, we often work with large datasets — think server logs, customer records,...
Iterator vs Generator — What’s the Difference?
Iterators and generators are closely related and often used together, they are not the same. Let’s...
What kind of database should you choose for your startup app?
When you’re starting to build an app for your startup, one common question is: what kind of database...
How Async Generators Work with SSE in JavaScript
Async generators in JavaScript provide an elegant way to handle Server-Sent Events (SSE)—especially...
EventSource vs Async Generator - What to Use for LLM Streaming?
When it comes to consuming streaming responses in the browser, especially from Server-Sent Events...
Understanding the Relation Between FastAPI and Uvicorn
If you're coming from a JavaScript ecosystem (like I did) and are trying to develop apps in Python,...
How to get a free AWS SSL certificate for your service
You've set up your web service on AWS, placed it behind an Application Load Balancer (ALB), and...
How To Add Simple Download Verification for Your Users
hen downloading apps or files, you might sometimes see a "Verify Download" option. It’s a small step,...
Understanding .well-known URIs
Recently, while exploring internal OAuth documents at work, I stumbled upon URLs that looked like...
JSON-RPC Uncovered
While tinkering with Agentic MCP servers at work, I ran into JSON-RPC, the slick tech driving parts...
Why do we need OAuth ?
There are two perspective here when explaining why do we need OAuth. Lets see the user view first. ...
SSO vs OAuth – Understand the Key Difference
If you're building modern web or mobile apps, chances are you've come across terms like SSO, OAuth,...
Easily Publish Private Packages to AWS CodeArtifact via GitHub Actions Workflow
You can seamlessly publish private packages to AWS CodeArtifact using GitHub Actions. This guide...
How the Blog Got Its Name?
Ever wondered how the word “blog” came to be? It all started in 1997, when internet writer Jorn...
Creating an AWS IAM Role with GitHub as a Web Identity Provider
To enable your GitHub Actions workflows to securely interact with AWS services, you can set up OIDC...
What Happens to sessionStorage When You Duplicate a Tab?
If you’re a developer debugging browser behavior or just curious about how browsers manage memory and...
How to Evaluate a System Design?
TL;DR When evaluating system design, think of it like a triangle: ✅ Fidelity – It does...
My Experience with Next.js Why It's Bad (And Getting Worse)
For the longest time (since 2021), Next.js has been my go-to framework for working with React. It’s...
How `Localhost` Works ?
Whether you're running a front end dev server or testing a backend API, chances are you’ve typed...
Why Does JavaScript Fetch Need Two Awaits?
If you've worked with the Fetch API in JavaScript, you've probably seen this pattern: const...
How to Integrate Chargebee Payment Links in Your Notion Website
If you're a business owner or a service provider, accepting online payments is crucial for your...
Adding type safety to environment variables in NextJS
I have been working with Next.js for sometime, but we used to find hard time with environment...
Guaranteeing webhook delivery in NextJS Application
Webhooks are a powerful tool that allow your SAAS application to send real-time updates to other...
Deploy NextJS to Surge.sh
NextJS is a special web framework that is built on top of the React library. It allows you to create...
How to remove old service worker?
Recently, I revamped my blogging site from Gatsby to NextJS. My new personal site was built from...
Integrate Chargebee and Kafka Using Upstash Webhook API
Today, lets see how to push Chargebee events to Apache Kafka using Upstash Webhook API. Once data is...