Use cases of the Workflow Engine

Question

I\'d like to know about specific problems you - the SO reader - have solved using Workflow Engines and what libraries/frameworks you used if you didn\'t roll your own. I\'d

Answer 1

I rolled my own workflow engine to support phased processing of documents - cataloging, sending for image processing (we work with redaction sw), if needed sending to validation, then release and finally shipping back to the client. In our case we have a truckload of documents to process so sometimes we need to run each service separately to control delivery and resources usage. Simple in concept but high performance and distributed processing needed, and we could't find any off the shelf product that fit the bill for us.