single VS distributing new connections across multiple pools with persistence

Persistence is specific to the pool. If the two pools you want to use have different members, then you would want to specify a different persistence cookie name depending on which pool to send the client to. So you could use 'persist cookie insert pool1_cookie 0' to insert a session cookie for pool 1 / use the existing cookie in the client's request to select the same pool1 member.

 

 

Here is some pseudo code to start with:

 

 

  
  when HTTP_REQUEST {  
  
      Check if client has pool1 persistence cookie  
     if {[string length [HTTP::cookie value $pool1_persist_cookie_name]]}{  
  
         Client has pool1 persistence cookie.  Check if pool is up?  
  
         Specify pool1 persistence to select same pool1 member  
        persist cookie insert $pool1_persist_cookie_name 0  
  
      Check if client has pool2 persistence cookie  
     } elseif {[string length [HTTP::cookie value $pool2_persist_cookie_name]]}{  
  
         Client has pool2 persistence cookie.  Check if pool is up?  
  
         Specify pool2 persistence to select same pool2 member  
        persist cookie insert $pool2_persist_cookie_name 0  
  
     } else {  
  
         Client has no persistence cookie, so select between pool1 and pool2  
  
            Set persistence based on selected pool  
  
     }  
  }  
 

 

 

Aaron