Friday, April 4, 2014



Reading Notes from "SOA Patterns" by Arnon Rotem-Gal-Oz

Chapter 1

  1. Service - Distinct business function, coarse-grained. Implements all functionality promised by the contracts it exposes.  Service autonomy - the service should be mainly self-sufficient.
  2. Contract - The collection of messages supported by the service is the contract.  Unilateral, bilateral.  Analogous to interface in OOOD.
  3. Endpoint - is a URI where the service can be found.
  4. Message - Unit of communication ( HTTP GET, SOAP, JMS, SMTP)
  5. Policy - Terms and conditions for making a service available.  Policy can be updated at runtime.  Specifies dynamic properties (encryption, authentication, authorization, auditing, SLAs).
  6. Service Consumer - A service is only meaningful if another piece of software uses it. Adhere to a SOA contract themselves.

Diagram:


Benefits