Failover with custom check

[Volker Weinberger]

Hi,
i am using apache with mod_jk and 2 tomcat servers. The failover works great in case of one tomcat server crashing and not responding any more. But if, for example,
one server can not connect to the database, it is still responding but should no longer be accessible. Is there the possibility to do a custom check with mod_jk or anything
like that? For example to check a return value from a page which tests the availibility of the database.