Welcome to My Tech Blog

GitHub

10 GitHub Repositories Every Developer Must Know in April 2026

GitHub's trending page has never moved faster. In the past 90 days, a handful of repositories went from unknown to unmissable — one crossed 210,000 stars in weeks. Here's exactly what's blowing up, why it matters, and how to put it to work today.

Darpan Patel · Apr 20, 2026

Data Science

SQL Is Still the Most Valuable Skill in Data. Here's Why I'd Learn It First.

Everyone tells beginners to start with Python. After four years in data roles, I'd tell them to start with SQL instead. Here's why it matters more, transfers more broadly, and takes less time to become useful.

Darpan Patel · Apr 20, 2026

Artificial Intelligence

My First ML Model Hit 99% Accuracy. Then It Hit Production.

Building my first real machine learning model, I was thrilled when it hit 99% accuracy on the test set. Then I deployed it and discovered why that number meant almost nothing.

Darpan Patel · Apr 20, 2026

Data Science

I Was Using Pandas Wrong for Two Years. Here's What I Missed.

I wrote Pandas code that worked but was slow, verbose, and embarrassing to show other data scientists. Here are the specific patterns I was using and the better alternatives that changed my approach.

Darpan Patel · Apr 20, 2026

Data Science

Why Most Data Dashboards Are Useless (And How to Build Ones People Actually Use)

I've built dozens of dashboards and watched most of them get ignored within a month. Here's what I learned about the difference between dashboards that inform decisions and dashboards that just exist.

Darpan Patel · Apr 20, 2026

Data Science

How I Went From Excel to Python for Data Analysis in 90 Days

I was an advanced Excel user who kept hearing I should learn Python. Here's the specific 90-day path I took, what resources actually worked, and the moment it stopped feeling like learning and started feeling like a tool.

Darpan Patel · Apr 20, 2026