Tomcat 8 classloading - difference between JAR in [WEB-INF/lib] and [tomcat/lib]

Question

It says here that the common classloader is visible to all web application. So what is the difference between having a JAR file within the WEB-INF/lib folder of

Answer 1

The tomcat/lib directory should be used for shared libraries for the whole web server and WEB-INF/lib only for one web application.