Async servlets and Tomcat 7 vs. mod_jk

[Jess Holle]

What are the limitations/requirements of using asynchronous servlets in 
Tomcat 7?

We use Apache and mod_jk to balance load over multiple Tomcats.  I note 
that there is no NIO AJP connector -- only BIO and APR.  I have /no 
/interest in the native APR connectors -- as it's simply /*far* /too 
painful to produce 7 different native builds of this (some on platforms 
with unbelievably horrific linkers).

What does this mean for us?  Does this mean asynchronous servlets won't 
work for us?  Or that they'll "work", but we won't actually reduce the 
thread usage in Tomcat at all?

In Apache, I note that there are noises about broader/better support for 
the mod_event MPM worker.  Does mod_jk work with mod_event there to 
reduce the threads required in Apache?

--
Jess Holle