Jochen Kemnade created TAP5-2207:
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Summary: It should be possible to be notified of session creations
and invalidations
Key: TAP5-2207
URL: https://issues.apache.org/jira/browse/TAP5-2207
Project: Tapestry 5
Issue Type: Improvement
Components: tapestry-core
Affects Versions: 5.3, 5.4
Reporter: Jochen Kemnade
Priority: Minor
There are cases when it would be very helpful if one could subscribe to the
creations and invalidations of sessions.
* Clear parts of a cache when a session is no longer valid
* Show how many users are currently using the application
Something like a `SessionStateHub` could be added, that is triggered when a
`SessionImpl` is created or invalidated. Then, there should be methods to
register listeners, e.g. `addSessionCreatedListener`,
`addSessionWillBeInvalidatedListener`, `addSessionInvalidatedListener`.
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