Deep tech analysis, practical engineering insights, and product strategy.
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Featured writing
How to Write Unit Tests That Actually Catch Bugs (Not Just Pass)
Learn how to write unit tests that actually catch bugs — not just pass. Covers the AAA pattern, behaviour vs implementation testing, edge cases, test doubles, mutation testing, and a pre-commit checklist for writing tests that protect production.
May 22, 2026
99Latency percentiles. Dependency health. Connection pool saturation. Idempotency success. 9 production metrics every API builder needs – with benchmarks, alert thresholds, and real-world failures prevented.

May 13, 2026
117PostgreSQL vs MongoDB in 2026 — an honest comparison covering benchmarks, data modelling, ACID transactions, scaling, pgvector vs Atlas Vector Search, pricing, and a decision framework for your project.

May 13, 2026
99SQL injection, no rate limiting, mass assignment – 7 security holes I still see in production APIs. Each takes under an hour to fix. Fix them before launch, not after the breach. Real code examples. Real checklist.

May 12, 2026
83I keep meeting brilliant developers who can't get hired. This is not a theory. Go check LinkedIn yourself. Here's what's actually broken – and what talented engineers can do about it. Real talk. No fake examples.

May 10, 2026
77Most people complain that Google is hard to please. Here's why that's actually the best thing about it — and why you'd hate it if Google sent everyone traffic

May 9, 2026
77Google wasn't touching my site. Then I did these 10 things. Here's exactly what changed — and what you should check first

May 5, 2026
108A bad API doesn't just frustrate developers. It loses them. This guide covers the principles, patterns, and concrete decisions that separate the APIs developers love from the ones they dread — with real examples you can apply immediately.

May 4, 2026
191Python vs Go for backend development in 2026 — a practical comparison covering performance benchmarks, concurrency, type systems, frameworks, deployment, and which language to choose for your project.

May 2, 2026
95Learn the 10 clean code principles every developer should follow — with real code examples in Python and JavaScript covering DRY, SOLID, KISS, YAGNI, error handling, and more.

April 29, 2026
111Tutorial hell. Analysis paralysis. Imposter syndrome. Here's why you're stuck — and how to actually move forward.

April 28, 2026
107Burnout, anxiety, exhaustion. Developer mental health is worse than most people realize. Here's why it matters and what you can actually do about it.

April 28, 2026
96Google dominates search for a reason. Here's what makes it better for ranking than Bing, DuckDuckGo, or anyone else.

April 28, 2026
83Submitted your site to Google and nothing happened? Here are the actual things that help Google find and index your pages faster — no magic, just best practices.

April 28, 2026
203Not all redirects are the same. 301 means permanent. 307 means temporary. Pick the wrong one and you lose SEO, break forms, or confuse browsers. Here's what each one actually does.

April 28, 2026
75Reading other people's code is harder than writing your own. Here's a systematic way to do it without wanting to quit.

April 28, 2026
71That wall of red text is trying to help you. Here's how to read a stack trace calmly — and actually find the bug.

April 28, 2026
84Authentication is proving who you are. Authorization is proving what you can do. Here's the difference — with real examples you'll actually remember.

April 27, 2026
74Fredsazy explains why he's actively teaching junior developers to use AI — and why banning it makes your team slower, not smarter.

April 27, 2026
120Fredsazy had a duplicate content warning from Google. Here's exactly how he fixed it with a 301 redirect — no rankings lost, no stress.

April 25, 2026
94You've heard the term. Fredsazy explains what "vibe coding" actually means — and why it's quietly changing how software gets built.

April 21, 2026
98
AI can run 3,600 security tests in the time a human runs one. Fredsazy explains why that's amazing — and why the same AI still can't configure your firewall correctly.

April 21, 2026
95We killed LoC as a metric. Then AI brought it back from the dead. Fredsazy explains why more code is now more dangerous — and what to measure instead.

April 18, 2026
127Everyone promised AI would mean less work. Fredsazy explains why the opposite is happening — and how to stop the burnout before it starts.
