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Multiple users system design question.

Posted By:      Posted Date: October 16, 2010    Points: 0   Category :ASP.Net


I am designing a web application that will allow users to accept jobs.  Once accepted, the job is locked until completed or released my an admin. 

I have researched this pretty heavily, everything seems to suggest this.  While I think this might be part of the solution, I am still wondering how to reflect the change on the screen. 

The solution we have come up with is to do polling with ajax, but the case we come back to is even if we check ever second...there can be ( and this is very likely ) that two or more users will click the same job at the same time.

Maybe this is as easy as this:

if( job.isLocked() ) {

    // Notify the user, and refresh grid.
    WarningLabel.Text = "Job is taken!!!!";


Our users use IE7 if this matters.  If anybody can give me a confirmation if this is the 'right' way to go about this, or propose other options I would greatly appreicate it.

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