Can anyone tell me...

[Earnie Dyke <ed...@vrs.state.va.us>]

what the units are for this in ISAPI redirector? Milliseconds, seconds, minutes?
 
Earnie!
 
 
cache_timeout     0     

Cache timeout property should be used with cachesize to specify how to time JK should keep an open socket in cache before closing it. This property should be used to reduce the number of threads on the Tomcat WebServer. 
 
Each child could open an ajp13 connection if it have to forward a request to Tomcat, creating a new ajp13 thread on Tomcat side. 
 
The problem is that after an ajp13 connection is created, the child won't drop it until killed. And since the webserver will keep its childs/threads running to handle high-load, even it the child/thread handle only static contents, you could finish having many unused ajp13 threads on the Tomcat side.