Tomcat Tuning Guide Tomcat configuration $Tomcat/conf/server.xml Assumption This configuration is optimized for REST/HTTP API call. And it doesn’t use any reverse proxy like Apache, NginX etc. We will reside simple L4 switch infront of tomcat groups. In addition we will not use Tomcat Clustering, Session etc. So the clustering configuration is omitted. Listener Setting checkedOsUser setting mean..