August 2018
Beginner
594 pages
22h 33m
English
Event-carried state transfer is a variation on event notification. Its use is not as common as regular event notification. When an event consumer receives an event notification, it may need more information from the event producer in order to take the action that they want to take.
For example, a sales system may send a new order event notification and a shipping system may subscribe to this type of event messages. However, in order to take appropriate action, the shipping system now needs additional information about the order, such as the quantity and type of line items that are in the order. This requires the shipping system to query the sales system in some way, such as through an API, for this information. ...
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