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# Asynchronous Conversation Patterns

Asynchronous Conversation Patterns are of one of the following types:

- Poll - The client polls the server periodically for information.
- Long Poll - The client polls the server and waits for a response. When the response arrives, another poll request is initiated.
- Push - The client sends a request. The server response is to send updates when there are changes to the requested information.
- Cross-user - One user performs an activity that is reflected in another user's client. For example, user1 sends email and user2 receives notification.

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