Our websites are loadbalanced thru our ACE modules and we are using the sticky feature.
Sticky is needed so that the customers session will retain the content of its shopping basket.
About 10% of our customers complain that the basket is emptied during a session, forcing them to start over. In our logs we indeed see that some users are balanced to another server during a session. Apparently in these cases the sticky feature is ignored somehow.
My question is, what are the possible triggers that the ACE uses to dismiss the sticky for a given session and start a new one?
Could it for example be caused by an html-page containing a link to another vip than the vip the page is originally served from?
Or could a simple spelling-error in a link be the trigger?
Which sticky method are you using? src-IP or cookie-based? I have seen in some Oracle portal that the server sometimes switched to a new cookie value during an user session so ACE had no chance to keep the session sticky. In similar cases it's worth capturing the error and prove which component fails.
Hi, I've a similar scenario with a Cisco 4710 in a dmz, running a vip that end users are hitting from behind proxy and nat.
I enabled Cookie-Insert and its pushing down a cookie to the browser now, just wondering if I need to add persistence-rebalance when you are using cookie-insert. from the command reference it seems like all user sessions would end up on one rserver if i did that. Looking to ensure the round-robin is still used.
With persistence rebalance enabled, when successive GET requests result in load balancing that chooses the same policy, the ACE sends the request to the real server used for the last GET request. This behavior prevents the ACE from load balancing every request and recreating the server-side connection on every GET request, producing less overhead and better performance.
Another effect of persistence rebalance is that header insertion and cookie insertion, if enabled, occur for every request instead of only the first request.
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