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XF 1.1 Impossible To Get Latest Posts Efficiently?

Discussion in 'XenForo Questions and Support' started by Brent W, Aug 2, 2012.

  1. Brent W

    Brent W Well-Known Member

    So I recently purchased this add-on: http://xenforo.com/community/resources/recent-posts-forum-index-smf-style.392/

    I have been unable to use this add on due to the query in it taking over 10 seconds to run. See here: http://xenforo.com/community/threads/recent-posts-forum-index-smf-style-paid.28404/

    After doing a little research I noticed that ragtech also brought this up here: http://xenforo.com/community/threads/what-is-the-best-recent-posts-add-on.31721/#post-365068

    So is it impossible to get a fast query to simply show the latest 5 posts on the forum???
  2. ragtek

    ragtek Guest

    probably it's possible with some query optimization:) /that's what at least helped my query a little bit)

    but i'm doing it now completly different...
    fetching the data from the post table is too "expensive" :D
  3. Brent W

    Brent W Well-Known Member

    This is the query in the add-on:

            //Get the latest posts
    $recentindexPosts $this->limitQueryResults("
                SELECT post.*, thread.*, user.*,
                forum.title AS node_title, forum.node_id AS node_id
                FROM xf_post AS post
                LEFT JOIN xf_thread AS thread ON (thread.thread_id = post.thread_id)
                LEFT JOIN xf_user AS user ON (user.user_id = post.user_id)
                LEFT JOIN xf_node AS forum ON (forum.node_id = thread.node_id)
                WHERE NOT ISNULL(thread.thread_id) 
                AND post.message_state = 'visible'
                AND user.is_banned = 0
                GROUP BY post.post_id
                ORDER BY post.post_date DESC
  4. x3sphere

    x3sphere Active Member

    Not sure if it's the best approach but you can add a constraint to post_date


     SELECT post.*, thread.*, user.*,
                forum.title AS node_title, forum.node_id AS node_id
                FROM xf_post AS post
                LEFT JOIN xf_thread AS thread ON (thread.thread_id = post.thread_id)
                LEFT JOIN xf_user AS user ON (user.user_id = post.user_id)
                LEFT JOIN xf_node AS forum ON (forum.node_id = thread.node_id)
                WHERE post.message_state = 'visible'
                AND forum.node_id != 3
                AND user.is_banned = 0
    AND post.post_date >  1343624400
    ORDER BY post.post_date DESC
    LIMIT 10
    Will get last 10 posts since July 30. That query took 0.5 secs for me on a 220K post table. Instant afterwards due to cache.
  5. ragtek

    ragtek Guest

    my exotic way because i had to code it for a big customer with > 1 000 000 posts..
    cache the last 100 posts (including all necessary data) in a own table and fetch the data from there instead of the very big post table...:)

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