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Showing posts from April, 2015

Windows Workflow, child workflows and parallel loops

I recently needed to create a pretty complex workflow to process a large volume of records as quickly as possible. We needed to process 500k records in an hour. We have a scheduled process that triggers the initial workflow that looks for scheduled work. When work is found a call is made out to another system to load the data we need per order (so this can be 1-X order records). Each order record can have 1 to X  number of customer records we need to process. Along the way we have a few user approvals we wait for. In trying to create a Workflow process for this we ran into a few challenges and learnings. Hopefully, this helps some others out there. At a high level here is what we put together.  The idea here is the Management Workflow is the workflow that is fired off by the schedule. It then can fire off the processing workflow. The green workflows can have multiple instances of them created by its parent. The Processing Workflow is responsible for finding all the customers that need…