From Resin 3.0
| This article requires cleanup and may refer to a legacy version of Resin.
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Selecting a Backend Server
In testing situations, it can be important to select a particular backend server when making a request of the front-end server. The easiest solution is to take advantage of sticky sessions and use the ";jsessionid=" url.
Supposed in the following cluster of three backend servers, you wanted to test the second one, i.e. the one listening to 192.168.0.11. You could send a request to "/test.jsp;jsessionid=bXXXX".
<resin xmlns="http://caucho.com/ns/resin"> ... <cluster> <server id="a" address="192.168.0.10" port="6800"/> <server id="b" address="192.168.0.11" port="6801"/> <server id="c" address="192.168.0.12" port="6802"/> ... </cluster> </resin>
The 'b' will select the second server. Because that request uses URL rewriting and also because "bXXXX" value is too short, Resin will generate a new session instead of using the cookie value of "bXXXX".
Note, the non-reuse of the session value "bXXXX" is affected by the <reuse-session-id> configuration.