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Proxy Capability (Erl)

How can a service subject to decomposition continue to support consumers affected by the decomposition?

Proxy Capability

Problem

If an established service needs to be decomposed into multiple services, its contract and its existing consumers can be impacted.

Solution

The original service contract is preserved, even if underlying capability logic is separated, by turning the established capability definition into a proxy.

Application

Facade logic needs to be introduced to relay requests and responses between the proxy and newly located capabilities.

Impacts

The practical solution provided by this pattern results in a measure of service denormalization.

Architecture

Service

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Proxy Capability: By preserving the existing capability and allowing it to act as a proxy for the relocated capability logic, existing consumers will be less impacted.

By preserving the existing capability and allowing it to act as a proxy for the relocated capability logic, existing consumers will be less impacted.

SOASchool.com SOA Certified Professional (SOACP) Module 4: Fundamental SOA Analysis & Modeling with Services & Microservices

This pattern is covered in SOACP Module 4: Fundamental SOA Analysis & Modeling with Services & Microservices.

For more information regarding the SOA Certified Pofessional (SOACP) curriculum,
visit www.arcitura.com/soa.

SOA Design Patterns

This page contains excerpts from:

SOA Design Patterns by Thomas Erl

(ISBN: 0136135161, Hardcover, Full-Color, 400+ Illustrations, 865 pages)

For more information about this book, visit www.arcitura.com/books.

Web Service Contract Design and Versioning for SOA

This page contains excerpts from:

Web Service Contract Design and Versioning for SOA

by Thomas Erl, Anish Karmarkar, Priscilla Walmsley, Hugo Haas, Umit Yalcinalp, Canyang Kevin Liu, David Orchard, Andre Tost, James Pasley

For more information about this book, visit www.arcitura.com/books.