Hi All,
I have documented the MySQL DBCP Example on the http://tomcat.apache.org/tomcat-8.5-doc/jndi-datasource-examples-howto.html page. It shows architecturally how Tomcat serves the page by using a DataSource, Connection Pool and MySQL. It can be viewed here: https://design.codelytics.io/tomcat/jdbc-query, it is the second part, but it is more interesting than the first. There also is some more security documentation under the Tomcat folder at: https://design.codelytics.io. It documents the example: */jsp/security/protected/index.html*, which comes bundled with Tomcat. It visually shows how Tomcat performs Authentication and Authorisation internally. If anyone would like some other aspects of Tomcat documented, let me know