For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

Filip_Verlaeckt's avatar
Filip_Verlaeckt
Historic F5 Account
Sep 17, 2009

Queuing client requests on bigip

Hi

 

 

I need to solve the following issue.

 

Say I have 1000 simultaneous requests (POSTs) to my single webserver which can process - say - 10 requests per second. Is there a way to put the 990 remaining requests in a queue to spoon feed the server?

 

What is the easiest way to accomplish this sort of buffering?

 

 

Thanks

 

Filip

 

application delivery
dev
devops
iRules

2 Replies

  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Sep 17, 2009
    Hi Filip,

     

     

    I don't think there is a safe method to queue HTTP requests on LTM. This has been discussed a few times. This post has some possible options:

     

     

    http://devcentral.f5.com/Default.aspx?tabid=53&forumid=5&tpage=1&view=topic&postid=25174

     

     

    Aaron
  • Colin_Walker_12's avatar
    Colin_Walker_12
    Historic F5 Account
    Sep 17, 2009
    The nearest to this that I've seen done wouldn't work with POSTs, only GETs.

     

     

    The method was to count the connections to the server and when the threshold was reached, insert a custom cookie then use HTTP::respond to send back a "please hold" type queuing page to the user that had a built in meta refresh. The cookie could then be used to prioritize those that have already been queued (or those that have been queued more than x times, or whatever you wanted), allowing them in first when the server had more free connections.

     

     

    Colin