Hi all,
I'm looking for some suggestions on a problem I'm looking at. I have a
mod_perl handler running that sends out certain push messages (could be
e-mail, could be an http post etc.) for several customers that are
identified by a unique identifier.
Examples:
http://my.server.com/myhandler?target=customerA&data=sendthis
http://my.server.com/myhandler?target=customerB&data=sendthat
Now what I want to do is restrict the number of concurrent running
requests per customer. For example, if 5 apache children are running my
handler on behalf of customer A, I want my handler to do something else
with a new request for customer A. I don't want to throw away the 6th
request but slap it in some queue for later processing.
I looked at mod_throttle and similar offerings but they tend to throw
away requests when there are too many concurrent requests or when
bandwidht is higher than some defined max.. That's not what I want.
What I really need is some form of IPC between apache children so one
child can find out what other children are currently doing.
I've been thinking about IPC::Shareable but I have had some bad
experience with it (longish ago though).
Anyone got some pointers for me to look at? Is there something hidden in
the Apache API that I might use from mod_perl?
Regards,
Bas.
