Exactly one of the Hosts associated with each Engine MUST have a name matching the attribute of that Engine.
Clients normally use host names to identify the server they wish to connect to.
This class must implement the ) to the unpacked directory structure which it uses to detect changes in the WAR file while Tomcat is not running.
Any such change will trigger the deletion of the expanded directory and the deployment of the updated WAR file when Tomcat next starts.
A host will use background processing to perform live web application deployment related tasks.