Thursday, February 9, 2012

Chart control and Loadbalancer problems

Some third party tools are using the Chart control to create charts on a loadbalanced environment. This can sometimes cause problems, especially if no stickyness is activated on the loadbalanced server. So the charts are created on the memory or on a local drive of the web frontend server by the first request. If the client wants to request the image by a second request and the loadbalancer routes to another server, than the client will never see an image or perhaps sometimes if the loadbalanced routes the client to the server which created the image. So the best method is to activate stickyness so the request goes to the same server.

This configuration can cause also problems. I would recommend you to talk about the good and odds with your network guru.


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