October 2017
Intermediate to advanced
442 pages
12h 33m
English
Content preview from Architecting Modern Java EE Applications
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Asynchronous HTTP communication
The request response model of HTTP communication usually involves synchronous communication. A client requests a resource at a server and blocks until the response has been transmitted. Asynchronous communication using HTTP is therefore typically archived on a conceptual basis. The synchronous HTTP invocations can trigger long-running business processes. The external system can then either notify the caller by another mechanism later on or offer functionality for polling for updates.
For example, a sophisticated user management system offers methods to create users. Assume users need to be registered and legitimized in external systems as part of a longer-running, asynchronous business process. The application ...
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