16.10 - Publish-Subscribe Messaging - Access Module

Teradata Tools and Utilities Access Module Reference

prodname
Access Module
vrm_release
16.10
created_date
July 2017
category
Programming Reference
featnum
B035-2425-077K

A publish-subscribe messaging model is built around the concepts of topics, publishers, and subscribers. Data messages are sent to a topic by a publisher (sender), then received by one or more subscribers (receivers) of that topic. This model has a one-to-many relationship. Publishers and subscribers operate independently of each other, and they do not need to know anything about each other.

A subscriber can either be durable or nondurable:
  • A nondurable subscriber only gets messages that are published while it is connected.
  • A durable subscriber gets all the messages that are published, including the ones published while it is disconnected.
Publish-Subscribe Messaging Model