How can service autonomy be preserved when services require access to
shared data sources?
Problem
Service logic can be deployed in isolation to increase service
autonomy, but services continue to lose autonomy when
requiring access to shared data sources.
Solution
Services can have their own dedicated databases with replication
to shared data sources.
Application
An additional database needs to be provided for the service and
one or more replication channels need to be enabled between it
and the shared data sources.
Impacts
This pattern results in additional infrastructure cost and
demands, and an excess of replication channels can be difficult
to manage.
This page contains excerpts from:
SOA Design Patterns by Thomas Erl
Foreword by Grady Booch
With contributions from David Chappell, Jason Hogg, Anish Karmarkar, Mark Little, David Orchard, Satadru Roy, Thomas Rischbeck, Arnaud Simon, Clemens Utschig, Dennis Wisnosky, and others.
(ISBN: 0136135161, Hardcover, Full-Color, 400+ Illustrations, 865 pages)
For more information about this book, visitwww.soabooks.com.
Arcitura IT Certified Professionals (AITCP)
Arcitura IT Certified Professionals (AITCP)
Arcitura IT Certified Professionals (AITCP) 
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This page contains excerpts from:
