Cache Expiry Pushing

[PaymonK]

Cache Expiry Pushing

ApiProxyGenerator: If the method takes no parameters, and defines PushExpireClientCache, then in the generated XXXApi class, in a static constructor, register a SignalR or Socket client tot he server to receive cache expiry notifications.

On the server side, we need to add a static AsyncEvent object on the appropriate entity type, which is used as the signal point.
public static AsyncEvent PeopleDataChanged;

In the Api controller class, in a static constructor, add:
PushExpireClientCache.For(nameof(All)).PushUpon(Person.PeopleDataChanged);

Internally that shall implement a mechanism to host the SignalR stuff. So that every time the event is raised, the remote client sockets receive a signal to expire their cache.

[stale]

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