Rajat Jain

Rajat Jain

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Software Engineer at Uber, ex-Microsoft. I write about Software Development Concepts and try it to create the right mental model for a concept in the minds of readers.

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Make your async functions fast

Sep 8, 20226 min read

Promises power many of our data fetching workflows 🔋 To make Promises easier to work with, async functions introduce the async and await keywords...

Make your async functions fast

Design an LRU cache

Mar 17, 20224 min read

What is an LRU Cache Let’s first quickly go over what is cache. Computers have cache memory that temporarily stores the most frequently used data....

Design an LRU cache

Trim a binary search tree

Jan 28, 20222 min read

Well, well, well I know what you all are thinking. A tree problem?? When are we ever gonna use it? Why do interviewers ask questions related to...

Trim a binary search tree

useState hook - behind the hood

Dec 18, 20214 min read

Introduction 🍾 Hooks are special functions which let you "hook into" different React features. State, being one of its features, is hooked into by...

useState hook - behind the hood

Easy Implementation of Promise in JS

Sep 10, 20216 min read

Disclaimer: In this post, I am not going to implement Promise exactly the way it has been done in the JS specification. This is more likely a frontend...

Easy Implementation of Promise in JS

4 must know cool features in Javascript

Aug 31, 20215 min read

We as frontend developers try to optimise the way our webpages work. Javascript, with its cool new features help us optimise the way we write code in...

4 must know cool features in Javascript