SOLID · 12 MIN
Open/Closed Principle
Design for extension without rewriting the code that already works.
A long-running record of code, systems, architecture, operational scars, and the ideas that survived contact with production.
Only one reason to change.
Design for extension without rewriting the code that already works.
Query tuning, indexing strategies, and execution plans.
Tools, scripts and sysadmin lessons from years in production.
Patterns that hold up under scale, teams, and time.
Current experiments, new tools, and modern engineering practice.
From BlueQuartz in 2008 to modern architecture today.