DDIA Principles

Apply Kleppmann's principles to make informed decisions about data systems.

Core Framework: The Three Concerns

Every data system decision maps to these concerns:

1. Reliability - System works correctly despite faults
2. Scalability - System handles growth in data, traffic, or complexity
3. Maintainability - System remains operable and evolvable over time

When reviewing designs or making technology choices, evaluate against all three.

Quick Decision Patterns

Database Selection