@learnerexpress

Renuka Khirwadkar

@learnerexpressJoined April 2025

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Renuka Khirwadkar's blogs

Unlocking Techunlockaijargons.hashnode.dev72 posts

SAP BTP Developmentsap-btp-development.hashnode.dev4 posts

Git Basics and Essentialsgit-basics-and-essentials.hashnode.dev3 posts

Understanding Encapsulation in Javalearntocodewithrenuka.hashnode.dev1 post

HTML and CSS Guideshtmlandcssguide.hashnode.dev1 post

Articles Comments1

Recently published

RKRenuka Khirwadkarunlockaijargons.hashnode.devAug 17 · 19 min read

React From First Principles: Why React Exists and How to Think in Components

When people start learning React, the first thing they usually hear is: “React is a JavaScript library for building user interfaces.” Technically, that's correct. But it doesn't really answer the im

RKRenuka Khirwadkarunlockaijargons.hashnode.devAug 5 · 16 min read

How Does Google Maps Update Everything Instantly?

Imagine you're driving to a place you've never visited before. You open Google Maps, enter your destination, and start following the directions. As you drive, something interesting happens. Your blue

RKRenuka Khirwadkarunlockaijargons.hashnode.devAug 5 · 30 min read

How Millions of Events Travel Every Second (Without You Knowing)?

Let's build something. Suppose we are building a very simple e-commerce application. Nothing fancy. A customer opens the website, adds a laptop to the cart, and clicks Place Order. Done. Order placed.

RKRenuka Khirwadkarunlockaijargons.hashnode.devJul 26 · 27 min read

Database explained from scratch: Why they exist, how they work, and why every application depends on them

Imagine opening instagram after a week. Your profile is still there.Your followers are still there.Your posts are still there. Or think about Amazon. You can still see your previous orders, saved addr

RKRenuka Khirwadkarunlockaijargons.hashnode.devJul 19 · 20 min read

Where RAG Fails: Understand the Limitations

Why do we need RAG? Imagine you meet alien from another planet. The alien is very intelligent. It can understand any language.It can write stories.It can solve math problems.It can even answer many qu

Renuka Khirwadkar

About

Available for

Renuka Khirwadkar's blogs

Recently published

React From First Principles: Why React Exists and How to Think in Components

How Does Google Maps Update Everything Instantly?

How Millions of Events Travel Every Second (Without You Knowing)?

Database explained from scratch: Why they exist, how they work, and why every application depends on them

Where RAG Fails: Understand the Limitations

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Renuka Khirwadkar

About

Available for

Renuka Khirwadkar's blogs

Recently published

React From First Principles: Why React Exists and How to Think in Components

How Does Google Maps Update Everything Instantly?

How Millions of Events Travel Every Second (Without You Knowing)?

Database explained from scratch: Why they exist, how they work, and why every application depends on them

Where RAG Fails: Understand the Limitations