Daniel
A wild guess here but are you talking about WebObjects?
On Fri, 02 Feb 2001 01:28, Daniel Sully wrote:
> Is anyone using modperl in a way that it acts as an adaptor/scheduler in
> front of an app server in a 3-tier application environment?
I wrote a perl adaptor last year to sniff the traffic that the WebObjects
adaptor was sending to the application instances. I don't have the source
any more but as far as I can remember, it was only a few screensful of code.
However, it wasn't a full implementation of the adaptor and didn't work with
KeepAlive requests and so forth.
> Basically I have a vendor provided (with source however) adaptor that
> takes incoming requests to the webserver, and passes that request onto
> an any number of applications via a socket running on a different
> server. It handles failover from dead app instances, however not very
> well, and is a big pile of C code. It also has problems in that because
> Apache is not multithreaded, one child copy of that adaptor that has
> marked an app instance as dead can't let another child know about that
> dead instance.
I have often dreamt of writing a drop-in mod_perl replacement for the WO
adaptor... I have never worked anywhere where they didn't have trouble
configuring the Apache adaptor, particularly if their webservers were running
Linux. If you're interested in pursuing this, drop me a line and we can jam
on the topic for a bit. I also know the guy who wrote the hairy C code and
he might have some insight into how to reimplement it.
Kyle
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