Implement sticky sessions for a specific uri in VIP

Posted By hoolio on 01/22/2009 6:39 AM

 

 

You could take a look at the ASP session ID codeshare example to start with:

 

 

ASP Session ID Persistence (Click here)

 

 

Also, you're using a global variable $::myval to track whether to use persistence. A global variable is accessible and modifiable across all TCP connections, so one connection could overwrite the value from another. If you replace $::myval with $myval, it would be specific to that TCP connection. A local variable is available in all events across the same connection.

 

 

Aaron

 

 

 

I am a little bit of a novice when it comes to iRules, but i did try the codeshare example... i couldnt layer on a filtering mechanism that turned on the persistence only for a specific uri. It seems like the HTTP::uri value is not available in the HTTP_RESPONSE event handler (which is where you add the "session" to the persistence table).

 

 

Additionally from further reading it seems that i can only have sticky session persistence if i have a persistence profile defined on the VIP, but then i get sticky sessions for the entire site that the VIP is supporting.

 

 

Thanks for your input, more would be greatly appreciated.