TechPulse / Practical technology
Understand the tech. Make better decisions.
Developer guides, useful AI explainers, and hardware buying advice. Find your next answer.
How-To
How to Fix npm command not found After Installing Node.js
Fix ‘npm: command not found’ after installing Node.js — PATH issues, nvm setup, reinstalling Node, and platform-specific fixes for Mac, Windows, Linux.
Career
Is Competitive Programming Worth It for Getting a Job in 2026?
Does competitive programming help you get hired in 2026? Honest analysis of what it teaches, what it doesn’t, and whether it’s worth your time.
How-To
How to Write Unit Tests in Python with pytest: Complete 2026 Guide
Master pytest for Python testing — writing tests, fixtures, parametrization, mocking, coverage, and best practices. Full examples from beginner to advanced.
Accessories
Best Webcams for Remote Developers 2026: Logitech Brio vs Elgato Facecam vs Insta360 Link
We tested the best webcams for remote developers in 2026 — video quality, low-light performance, autofocus, and price compared for daily calls.
How-To
How to Fix React Hook useState is Called Conditionally Error
Fix ‘React Hook useState is called conditionally’ — understand the Rules of Hooks, why hooks can’t be in conditions, and the correct patterns.
Career
How Much Math Do You Really Need for Programming in 2026?
How much math is actually required to be a programmer in 2026? Honest breakdown by field — web dev, game dev, ML, and what math you can skip.
How-To
How to Use Redis for Caching in a Node.js App: Complete 2026 Guide
Add Redis caching to a Node.js app — cache-aside pattern, TTL, cache invalidation, session storage, and rate limiting. Full code with ioredis.
Accessories
Best Ergonomic Mice for Developers 2026: Logitech MX vs Razer vs Vertical Mice
We tested the best ergonomic mice for developers in 2026 — comfort, RSI prevention, precision, and programmable buttons compared over 3 months.
How-To
How to Fix Permission Denied publickey SSH Error on GitHub
Fix ‘Permission denied (publickey)’ when pushing to GitHub — generate SSH keys, add to agent and GitHub, test the connection, and fix common causes.