[email protected] wrote:
[...]
Not a real answer to your question, just some data.
VirtualHost's will use the same pool of Apache threads/children.
A VirtualHost is only a different "personality" that one Apache
thread/child assumes temporarily to handle a request, depending on the
"Host:" header of the request. All threads/children are identical, and
can handle any request for any VirtualHost at any one time, and it is
not so that there is one separate thread/child per VirtualHost.
But a thread/child that at any one time is "impersonating" a given
VirtualHost can re-direct a request to a different "worker", or set of
workers, and thus possibly a different set of back-end servers (be they
different Tomcat instances on the same host, or different Tomcats on
different hosts).
It is not really clear in your question what you mean by "stack A or B
misbehave". I mean that if your "slow" back-end can handle 10 requests
per second, and 20 requests come in, what would you really like to happen ?
Also, are "fast" and "slow" requests arriving on the same VirtualHost's
(meaning hostnames), or is it so that there is one set of VirtualHosts
that only receives "fast" requests and another that only receives "slow"
requests ?
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