Life Quote by Greg Young
““Just like in real life, in code, a feature is triggered by an action (command) that results in a sequence of events that might or might not cause side effects.””
About This Quote
Source Speech: Domain-Driven Design Conference, 2005
Code mirrors reality: actions trigger features, creating event chains that may produce side effects, reflecting complex system behavior.
In simple terms: Code actions cause events, sometimes with side effects.
Key Takeaway
Design code to manage side effects.
Themes
software design
causality
systems thinking
Mood
analytical
pragmatic
Type
technical
educational
When to use this quote
- real‑time systems
- API design
- microservices
Key Concepts
event sourcing
command pattern
effects effects
Questions to Reflect On
- How can you isolate unintended side effects?
- When should side effects be allowed?
A Different Perspective
Side effects can be hard to predict and test.
