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understanding session code

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  • understanding session code

    hello,

    i'm very familiar with the vbulletin code and hacked my forum alot. the last few weeks i was grabbing the forum again to find slow and unnecessary queries due to the lack of vBulletin's scalability.
    I found one Update to the user table which i don't understand.
    It is located in admin/session.php line 385-395.
    Where is the need for this update if I turned $showforumusers off?
    The same information is kept in the session table (which is small and HEAP) and should merged into user during garbage collection in doshutdown() already.

    Does it hurt if I'd change the
    } else {
    part to something like
    } else if ($showforumusers) {
    ??

    Are there some other customers who modified vBulletin to work under heavy load?
    I'm running a site using vBulletins backend with 1 million page views a day, 600 - 1000 concurrent users. 3 load-balanced webservers and one MySQL box.

    thanks
    sneak
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