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Contract Centralization (Erl)

How can direct consumer-to-implementation coupling be avoided?

Contract Centralization

Problem

Consumer programs can be designed to access underlying service resources using different entry points, resulting in different forms of implementation dependencies that inhibit the service from evolving in response to change.

Solution

Access to service logic is limited to the service contract, forcing consumers to avoid implementation coupling.

Application

This pattern is realized through formal enterprise design standards and the targeted application of the Service Abstraction design principle.

Impacts

Forcing consumer programs to access service capabilities and resources via a central contract can impose performance overhead and requires on-going standardization effort.

Architecture

Composition, Service

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Contract Centralization: Through Contract Centralization we place the service contract front and center within a service architecture. This is why much of service-orientation is focused on contract design.

Through Contract Centralization we place the service contract front and center within a service architecture. This is why much of service-orientation is focused on contract design.

Module 7: Advanced SOA Design & Architecture with Services & Microservices

This pattern is covered in SOACP Module 7: Advanced SOA Design & Architecture 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.