A curated collection of downloadable code snippets, complete project repositories, starter templates, and reference implementations. Quick-access resources for developers looking for working examples they can adapt to their own projects.
Prompt Engineering Mastery: 12 Advanced Techniques Top Developers Use in 2026
Prompt Engineering 2026 I still remember the first time I tried to get an AI model to do exactly what I wanted. It was frustrating, like trying to give directions…
Claude vs ChatGPT vs Gemini 2026: Which AI Coding Assistant Actually Saves You Time
Coding assistant comparison I’ve been writing code professionally for twelve years. I’ve seen frameworks come and go, languages rise and fall, and tools promise to revolutionize development only to fade…
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…
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…
The Silent Killer of Go Services: Debugging and Setting OS Resource Limits (ulimit and RLIMIT) in Production
go resource limits production Last Tuesday at 3:47 AM, my phone buzzed with an alert that made my stomach drop. Our payment processing service was down. Not slow. Not degraded.…
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…
Complete Code Files for TaskMaster Android App
Read Full Article step by step: https://kovisys.com/building-android-app-from-scratch-java-complete-guide/ Copy and paste these files into your Android Studio project. File 1: MainActivity.java Location: app/src/main/java/com/yourname/taskmaster/MainActivity.java Replace com.yourname.taskmaster with your actual package name! File…
Building Your First Android App From Scratch Using Java With Full Source Code
Ever wondered how those apps on your phone actually get made? Today, I’m going to show you exactly how to build a real Android app from start to finish. No…