Wolf Call
Wolf Call is a messaging pattern for service presence detection in which a client verifies whether or not a service is present. The diagram shows this pattern, where Caller refers to the client, and Wolf refers to the service instance or instances. The Router refers to a set of feeds and pipes, or other resources capable of queuing and routing messages.
Wolf Call is an aspect of Wolfpack and is always decoupled. The wolves read from a shared queue named for the service, and the caller checks for the presence of this named queue.
The RestMS 4/AMQP9 profile implements Wolf Call through the service and rotator feed types.
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Table of Contents
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- TELNET (15 Apr 2009 12:20)
- Profile (15 Apr 2009 12:19)
- Parrot (14 Apr 2009 18:10)
- Wolf Call (14 Apr 2009 18:02)
- Wolfpack (14 Apr 2009 18:01)
- Multimaster Housecat (14 Apr 2009 15:08)
- Reverse Housecat (14 Apr 2009 15:02)
- Housecat (14 Apr 2009 14:49)
page revision: 3, last edited: 26 Apr 2009 13:43
