Background processing

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As a requests enters the NRE/VDX system, background processes will pickup the requests and depending on its status or action. NRE/VDX will process them and release them back to the staff user.

Background processes will wake every minute to check if there is something to process. If there is, the back-end processes will process what is in the queue for that process and go back to sleep.

Background process could take a few seconds to a few minutes to process depending on the number of request that need to be processed.

Service	Performs	Notes
Article Exchange Listener	Process Article Exchange files attached to the request	Copies are pulled from the AE system and inserted into NRE/VDX for distribution.
Circulation Client	Processes NCIP messages	If configured
DocFind Requester	Builds and sorts Lending String/Rota for borrowing requests	Lending String/Rota locations are filtered and sorted.
DocFind Responder	Checks catalog to verify that lending library - owns the title - the item is available - places hold if NCIP is configured	If any of the checks fail the system do one of the following: 1. Answer Non-Supply or 2. Place request in "New Request" queue
General Email Receiver	Receives and processes VDX formatted email requests
Generic Script Driver Generic Script Receiver	Processes Generic Script protocol email requests
ISO-ILL Driver ISO-ILL IP Listener ISO-ILL Mail Listener ISO-ILL Receiver	Processes ISO ILL requests	Receives and sends ISO ILL requests to external ILL systems
Integrated ILL	Process internal consortia requests
User Alerting Agent	Sends alerts to patrons	If configured