Mohamed Mayallo

Mohamed Mayallo

34 followers

I'm a Software Engineer Passionate about Clean Code, Design Patterns, and System Design. Learning something new every day. Feel free to say Hi on LinkedIn at https://www.linkedin.com/in/mayallo

Unit, Integration, and E2E Testing in One Example Using Jest

Nov 14, 202410 min read107 views

Let’s Implement Unit, Integration, and End-to-End (E2E) Testing with Jest, Puppeteer, and Supertest in a Simple Node.js and MongoDB Example ·...

Unit, Integration, and E2E Testing in One Example Using Jest

How I Improved Video Streaming with FFmpeg and Node.js

Nov 5, 20249 min read12 views

Generating a thumbnail, compressing a video, generating a preview clip, and generating HLS segments using FFmpeg · Introduction Nowadays, videos are...

How I Improved Video Streaming with FFmpeg and Node.js

Group by Year, Month, or Day in PostgreSQL

Jun 26, 20234 min read9 views

How to group data by specific date interval using DATE_TRUNC(), EXTRACT(), or TO_CHAR() functions in PostgreSQL. · Introduction PostgreSQL is one of the...

Group by Year, Month, or Day in PostgreSQL

Exponentiation in JavaScript: A Beginner’s Guide

Jun 23, 20233 min read17 views

In JavaScript, you can perform the exponentiation process using the ** operator or Math.pow() method. · Introduction Exponentiation refers to a...

Exponentiation in JavaScript: A Beginner’s Guide

How to Break from forEach in JavaScript?

Jun 17, 20233 min read23 views

There is no direct way to break from the forEach() function, however, there are some workarounds. · Introduction In JavaScript, forEach() is a FUNCTION...

How to Break from forEach in JavaScript?

The Double Question Mark (Nullish Coalescing Operator) in JavaScript

Jun 14, 20234 min read15 views

The Nullish Coalescing Operator (Double Question Mark ??) is a special case from the OR Logical Operator (||). Let's introduce some use cases of it. ·...

The Double Question Mark (Nullish Coalescing Operator) in JavaScript