Step-by-step instructions and complete project walkthroughs for building real-world applications. Follow along with detailed tutorials that include full source code, explanations, and best practices. Perfect for developers who learn by doing and want to build portfolio-worthy projects.
One Missing Index Caused Our Database to Timeout Under Load
missing database index The error started appearing at 2:14 PM. Not gradually. Not as a warning. Just sudden, complete failure. Within minutes, our entire application was effectively down. Users couldn’t…
Our Cron Jobs Were Quietly Failing for Months — Here’s Why
Laravel scheduler failures “Why haven’t we sent any invoice reminders in three months?” The question came from our finance team during a casual Slack conversation. My stomach dropped. Invoice reminders…
A 10-Line Code Change That Eliminated Random Production Failures
Laravel Job Deadlocks It was 2:47 AM when my phone buzzed with the fourth Sentry alert of the night. Same error, mysterious stack trace. Same “I have no idea what’s…
We Cut Our AWS Bill by 42% Using Only Configuration Changes
AWS cost optimization I was in a meeting with our CFO when she slid a printed AWS bill across the table. “$47,000 for last month. That’s up 18% from last…
This One Laravel Mistake Was Causing 3-Second API Responses
Laravel N+1 query problem I’ll never forget the day our mobile team lead walked into my office and said, “Your API is killing our app. Users are seeing spinners for…
How We Reduced Database Queries by 80% Without Touching the Schema
Database Queries Last month, our production dashboard was showing 15,000 database queries per minute during peak hours. Our response times were creeping up, and the database CPU was constantly hovering…
What They Actually Ask in Coding Rounds at Tech Giants: Real Questions from My 47 Interviews
Published: December 2025 (Coding Interview Questions) Let me tell you about the worst interview of my life. It was Google, round three, and the interviewer asked me to design a…
The Complete Java DSA Roadmap: From Zero to Hero
Last updated: December 2025 (Java DSA) I still remember sitting in front of my laptop at 2 AM, staring at a LeetCode problem that seemed impossible. My coffee had gone…
Why Smart Businesses Are Ditching Traditional Development (And You Should Too)
I’ll never forget the look on my CTO’s face when I suggested we rebuild our customer portal using a no-code platform. It was 2019, and we’d just burned through six…
Building a CLI Tool from Scratch in Go
Go CLI tool So I’ve been using command line tools for years – git, docker, kubectl, you name it. But I never actually built one myself until last week when…
Building RESTful APIs with Go and Gorilla Mux
Last month, I had to rebuild our team’s API from scratch. The old one? A mess of spaghetti code that nobody wanted to touch. I decided to go with Go…
Go Language: The Complete Developer’s Guide to Modern Concurrent Programming
I still remember my first encounter with Go. It was 2018, and our team was struggling with a monolithic Java application that took forever to build and deploy. A colleague…