My Principles for building software

“Simplicity is the ultimate sophistication.”
Automated testing - could not be left out, although I believe it is already a consensus in the industry.
Prefer pure functions and immutable data - improves testability, predictability, etc.
Computers are fast - don’t try to optimize to solve a problem you don’t have - “premature optimization is the root of all evil” Donald Knuth
Monolith first and The Majestic Monolith
Microservices are about team topologies and scaling systems with different types of bounds
Do NOT start building your own platform - PaaS will be better built and cheaper than hiring DevOps and building internally.
- When to build a platform internally?
  - When the cost of building and maintaining is smaller than paying a PaaS
  - Or when you have a specific use case not supported by PaaS (uncommon)
PostgreSQL is probably the only database you need
Choose Boring Technology
All code must serve the business.
Cognitive Load is what matters