"clients-per-query" vs "max-clients-per-query"

[Jorge Fábregas]

Hi,

I'm trying to understand the difference between clients-per-query &
max-clients-per-query.  I found a nice explanation by Mark Andrews here
[1] but then I wondered about max-clients-per-query.

Given a "clients-per-query" of 10, I assume that named will only queue
up 10 clients before it starts dropping queries.  As far as I
understand, there would be one outstanding recursive-client (doing the
actual recursion for a given name/type) and when it finally receives the
answer it will give it to the other 9 clients that were waiting.

For me, this "clients-per-query" of 10 is an upper limit (maximum number
of clients before it starts dropping).  So then, what's the purpose of
"max-clients-per-query"?

Thanks.

-- 
Jorge

[1]: https://lists.isc.org/pipermail/bind-users/2011-March/083330.html