Pattern Languages

Reusable design patterns with names, forms, and contexts where they fit.

The Idea

Christopher Alexander: good design reuses proven patterns. Each pattern names a problem, a context, and a form that solves it. Patterns combine into a language — a vocabulary for designing.

Why It Matters

Naming common patterns speeds shared understanding.
Patterns distil many people's experience into reusable forms.
A language of patterns makes design teachable.

Examples in Software

Design patterns (Observer, Factory).
UI patterns (hamburger menu, pull-to-refresh, empty state).
Service patterns (circuit breaker, retry with backoff).

How to Apply

Name the patterns your team uses. Write one-page descriptions.
Use pattern names in design reviews to speed decisions.
Evolve patterns as you learn; don't treat them as fixed rules.

The Trap

Applying patterns by rote. A pattern only helps when the context fits. Copying the form without the context produces cargo-cult design.