May 2017
Intermediate to advanced
230 pages
7h 27m
English
Content preview from Mastering Non-Functional Requirements
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Solution
Implement a mechanism that holds session information whilst the user is interacting with the system and makes this information available to the duplicate servers in the system.
Architecture introduces a session persistence mechanism in the form of a session backup server. The session state is saved whenever it is changed in response to a request. We introduce request-based failover so that the system software tries to load session state from the session backup server whenever it receives a request that forms part of a session that it doesn't recognize.
This pattern applies essentially to software. The state is maintained in the context of a software component, and the session backup server is usually implemented in software. Hardware ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.