1️⃣🐝🏎️ The One Billion Row Challenge -- A fun exploration of how quickly 1B rows from a text file can be aggregated with Java

A group of notebooks and other files which can help you learn AI from scratch.

Suite of tools containing an in-memory vector datastore and AI proxy

NestJS RESTful APIs Sample

Scan for React performance issues and eliminate slow renders in your app

Yet another minesweeper written in go.

Next.js project tested with Cypress and Playwright

An example repository for E2E testing with Clerk + Nextjs + Playwright

This is a cheat sheet repo for Next.js + Jest + React Testing Library

👻 Ghostty is a fast, feature-rich, and cross-platform terminal emulator that uses platform-native UI and GPU acceleration.

Your coding year in review

The GitHub README for Justintime50.

A curated list of awesome things related to NestJS 😎

A simple function that validates and returns common Nigerian Telco numbers

A repository of Solana program examples

Build a simple video encoder from scratch

⚡️ Express inspired web framework written in Go

A curated list of Rust code and resources.

An attempt to reproduce Google Filesystem 2002

Learn Next.js Starter Code

JavaScript Style Guide

Express + TypeScript starter template

Modern NodeJS Backend Development - WhereIsMyMotivation - Nestjs Backend Architecture - Learn to build a modular and secure backend services using very popular Nestjs framework.

Print-friendly, minimalist CV page

Master programming by recreating your favorite technologies from scratch.

Front End interview preparation materials for busy engineers (updated for 2025)

📚 A curated list of papers for Software Engineers

leetcode problems I solved to prepare for my Google interview.

📚 Freely available programming books

Everything you need to prepare for your technical interview