Proxy Pattern

Kind: pattern

Layer: Design Patterns Core

Aliases: Surrogate

Record: architecture:proxy-pattern

Severity: contextual

Scope: access control, remote access, lazy loading

Canonical: Ontology

A design pattern that places a stand-in with the same interface in front of an object, to control, defer or cache access to it.

Listed in Architecture principles, after Facade Pattern and before Bridge Pattern.

Requires

• Controlled Access

Reinforces

• Encapsulation
• Security

Enables

• Lazy Load
• Authorization
• Remote Stub

Conflicts with

• Direct Access

In tension with

• Transparency / Debugging

Tensions

• Proxy Pattern / Transparency / Debugging

Violated by

• Direct Access

Severity

• contextual

Category

• Structural Patterns

Linked from

• Core Modular Design
• Security / Privacy / Compliance / Governance
• Core Vocabulary
• Quality Attributes
• Structural Patterns
• Severity levels
• The resolutions