Mediator Pattern

Kind: pattern

Layer: Design Patterns Core

Record: architecture:mediator-pattern

Severity: contextual

Scope: object coordination, module

Canonical: Ontology

A design pattern that routes the interactions between a set of objects through one coordinating object.

Listed in Architecture principles, after Observer Pattern and before Command Pattern.

Requires

• Coordination Complexity

Reinforces

• Low Coupling

Enables

• Centralized Interaction Logic

Conflicts with

• Mesh Dependencies

In tension with

• Mediator God Object

Tensions

• Mediator Pattern / Mediator God Object

Violated by

• Mesh Dependencies

Severity

• contextual

Category

• Behavioral Patterns

Refactors

• Circular Dependency

Linked from

• Anti-patterns
• Core Modular Design
• Behavioral Patterns
• Severity levels
• The resolutions