Hi all, I started a PR against modernxmpp to document MAM sync strategies after a discussion on jdev yesterday:
https://github.com/modernxmpp/modernxmpp/pull/41 I wondered if anyone would share what their sync strategy is (or even possibly add it to that PR) so that we can document a few clients and maybe move towards an XEP that outlines one or two ideal ones? I'll start with the one I described in the chat yesterday that's used (experimentally) by Mellium/Communiqué: On client start iterate through all items in the roster. If no messages exist in the local archive: Query in reverse order (in case the server breaks it up by page and we end up committing pages separately) with before: now && limit: X (where X is some configurable number, what we think will fit on the page with some margin, etc.). Otherwise query with after-id: <last message> (making sure that the last message was pulled from the DB before we send initial presence). If the user scrolls to the top of the history, query in reverse order with before-id: <first message>. Fetch the next page for as long as they continue to scroll up. Thanks, Sam -- Sam Whited _______________________________________________ Standards mailing list Info: https://mail.jabber.org/mailman/listinfo/standards Unsubscribe: standards-unsubscr...@xmpp.org _______________________________________________
