@vikasvarma369

Understanding DynamoDB: How I Designed My DynamoDB Models for a Scalable Course Platform

Apr 10, 2025 · 3 min read · DynamoDB is a powerful NoSQL database service by AWS, but understanding how to model your data efficiently is what really makes the difference. Here is a simplified explanation based on the way i structured my own learning project using DynamoDB. Cor...

React Virtual DOM

Jan 4, 2025 · 2 min read · Whenever user can do any changes in application then basically we are updating the real DOM. Without DOM Application cannot interact even interact or handle by JavaScript. Virtual Dom is only specific for React only this develop for speed of the appl...

Closure In JavaScript

May 8, 2024 · 1 min read · Closure is a powerful concept that combines a function with its surrounding environment (This environment is also called lexical environment) at the time the function was created. This environment includes all the variables and functions that were ac...

This Keyword in Javascript

Apr 19, 2024 · 2 min read · 'This' keyword depends on how and where a function is called. It acts like a chameleon, Adapting its meaning based on the context. This refers to an object that is executing the current function or code. Inside an Object method When 'This' is used wi...

What is Hoisting?

Apr 6, 2024 · 1 min read · Hoisting: Hoisting allows functions and variables(with var) to be used before they are declared. This behavior gives us a peek behind the scenes of how JavaScript works It's a javascript behavior where function and variable declaration (with Var) are...