A collection of opinionated engineering notes from real-world production systems.
These aren’t neutral tutorials or “best practices.” Every decision reflects trade-offs, constraints, and experience. Bias is intentional—because real engineering isn’t objective.
Many people, especially outside the tech world, imagine engineering as a purely objective, mathematical discipline. Some think that for any given problem, there is one single, perfect, "engineered" solution that can be calculated.
This is a myth.
Real-world engineering is complex and messy.
Opinions on tech topics.
Some lessons learned from production work and investigations.
Disagree freely.
Be constructive in your comments.
If a note feels wrong, it probably means our constraints differ. Take what’s useful, ignore what isn’t, and always apply your own judgment.