Technical Blogs

Deep dives into web technologies, protocols, and developer tools, fetched directly from Dev.to.

How Instagram, WhatsApp, Uber & Netflix Would Be Built Today Using Expo Router

10 min

#architecture#design#reactnative

How Instagram, WhatsApp, Uber & Netflix Would Be Built Today Using Expo Router

When we think about apps like Instagram, WhatsApp, Uber, or Netflix, it's easy to get lost in the...

June 1, 2026

Expo Router vs React Navigation: Which One Should You Use in 2026?

13 min

#expo#reactnative#reactnavigation

Expo Router vs React Navigation: Which One Should You Use in 2026?

If you've spent any time building React Native apps, you've already bumped into the question. You're...

June 1, 2026

How Instagram Stores Reels, Photos, and Drafts Behind the Scenes

10 min

#expo#instagram#reactnative

How Instagram Stores Reels, Photos, and Drafts Behind the Scenes

You pull out your phone, record a 30-second Reel, add a trending audio, and hit "Save Draft" because...

May 31, 2026

How WhatsApp Works Without Internet: Offline Messaging and Sync Explained

7 min

#expo#reactnative

How WhatsApp Works Without Internet: Offline Messaging and Sync Explained

You're on the subway, signal drops to zero, and you still tap send on that message. A single grey...

May 31, 2026

I Spent a Weekend Hunting Through Linux's File System and Here's What I Found

10 min

#linux#filesystem

I Spent a Weekend Hunting Through Linux's File System and Here's What I Found

Most people learn Linux by memorizing commands. ls, cd, mkdir. But here's the thing, that barely...

May 29, 2026

How React's Virtual DOM Works Under the Hood

7 min

#react#reactnative

How React's Virtual DOM Works Under the Hood

So you've been using React for a while, calling setState, watching your UI update magically, and...

May 28, 2026

Sessions vs JWT vs Cookies: Understanding Authentication Approaches

6 min

#jwt#cookies#node

Sessions vs JWT vs Cookies: Understanding Authentication Approaches

Hello readers 👋, welcome to the 15th blog in our Node.js series! In our previous posts, we built a...

May 10, 2026

URL Parameters vs Query Strings in Express.js

6 min

#express#node#url

URL Parameters vs Query Strings in Express.js

Hello readers 👋, welcome to the 14th blog in our Node.js series! In the last few posts, we built a...

May 10, 2026

Storing Uploaded Files and Serving Them in Express

6 min

#express#multer#node

Storing Uploaded Files and Serving Them in Express

Hello readers 👋, welcome to the 13th blog in our Node.js series! In the last post, we learned how...

May 10, 2026

Handling File Uploads in Express with Multer

6 min

#express#node#multer

Handling File Uploads in Express with Multer

Hello readers 👋, welcome to the 12th blog in our Node.js series! In the last post, we learned how...

May 10, 2026

Creating Routes and Handling Requests with Express

5 min

#express#routes#node

Creating Routes and Handling Requests with Express

Hello readers 👋, welcome to the 11th blog in our Node.js series! We've come a long way. We started...

May 10, 2026

What is Middleware in Express and How It Works

7 min

#express#node

What is Middleware in Express and How It Works

Hello readers 👋, welcome to the 10th blog in our Node.js series! In the last post, we built a clean...

May 10, 2026

REST API Design Made Simple with Express.js

7 min

#express#node

REST API Design Made Simple with Express.js

Hello readers 👋, welcome to the 9th blog in our Node.js series! In our last post, we learned how JWT...

May 9, 2026

JWT Authentication in Node.js Explained Simply

7 min

#jwt#node#authentication

JWT Authentication in Node.js Explained Simply

Hello readers 👋, welcome to the 8th blog of our Node.js journey! So far, we've covered how Node.js...

May 9, 2026

6 min

#node

Async Code in Node.js: Callbacks and Promises

Hello readers 👋, welcome to the 7th of our Node.js journey! Last time, we explored how a...

May 9, 2026

7 min

#node

How Node.js Handles Multiple Requests with a Single Thread

Hello readers 👋, welcome to the 6th blog of our Node.js journey! In the last post, we explored the...

May 9, 2026

6 min

#node

Blocking vs Non-Blocking Code in Node.js

Hello readers 👋, welcome to the 5th blog of our Node.js Series! In the last post, we unpacked the...

May 9, 2026

7 min

#node

The Node.js Event Loop Explained

Hello readers 👋, welcome to the 4th blog in our Node.js journey! In the last few posts, we installed...

May 9, 2026

7 min

#node

Why Node.js is Perfect for Building Fast Web Applications

Hello readers 👋, welcome to the 3rd blog in this NodeJS series! In the last post, we explored what...

May 9, 2026

10 min

#node

What is Node.js? JavaScript on the Server Explained

Hello readers 👋, welcome to the 2nd blog in this NodeJS series! In our last post, we did something...

May 9, 2026

7 min

#node

Setting Up Your First Node.js Application Step-by-Step

Hello readers 👋, welcome to the 1st blog in the NodeJS series! So far, we've spent a lot of time...

May 9, 2026

String Polyfills and Common Interview Methods in JavaScript

8 min

#javascript#polyfills

String Polyfills and Common Interview Methods in JavaScript

Hello readers 👋, welcome to the 24th blog in this JavaScript series! Last time we explored the...

May 5, 2026

5 min

#javascript#rest#spread

Spread vs Rest Operators in JavaScript

Hello readers 👋, welcome to the 23rd blog in this JavaScript series! In the last post, we discovered...

May 5, 2026

Async/Await in JavaScript: Writing Cleaner Asynchronous Code

7 min

#asyncawait#javascript#webdev

Async/Await in JavaScript: Writing Cleaner Asynchronous Code

Hello readers 👋, welcome to the 22nd blog in this JavaScript series! In our last post, we learned...

May 5, 2026

Error Handling in JavaScript: Try, Catch, Finally

6 min

#webdev#javascript#errors

Error Handling in JavaScript: Try, Catch, Finally

Hello readers 👋, welcome to the 21st blog in this JavaScript series! In the last post, we unlocked...

May 5, 2026

6 min

#destructuring#javascript

Destructuring in JavaScript

Hello readers 👋, welcome to the 20th blog in this JavaScript series! In the last post, we explored...

May 5, 2026

7 min

#mapset#javascript#webdev

Map & Set

Hello readers 👋, welcome to the 19th blog in this JavaScript series! In the last post, we explored...

Hello readers 👋, welcome to the 18th blog in this JavaScript series! Today we are going to tackle a...

April 30, 2026

7 min

#javascript#webdev

Promises in JavaScript

Hello readers 👋, welcome to the 17th blog in this JavaScript series! In the last post, we talked...

April 29, 2026

7 min

#webdev#javascript#synchronous

Synchronous vs Asynchronous JavaScript

Hello readers 👋, welcome to the 16th blog in this JavaScript series! Today we are going to talk...

April 27, 2026