>> This is currently beta/test quality, but some people may be
interested in trying it anyway. <<
AJP stands for Apache JServe Protocol and is a binary protocol that
can ferry inbound requests from an Apache web server through to an
application server that sits behind a web server. It also supports
some monitoring in terms of the web server being able to "ping" the
application servers to see if they are still there. Sessions are
redirected to the correct application server using a routing
mechanism wherein each application server instance gets a name which
is called a "route".
AJP is implemented in Apache 1.X using the "mod_jk" plugin and is
implemented in Apache 2 using the "proxy_ajp", "proxy" and
"proxy_balancer" modules which are all supplied in the standard
distribution for Apache 2.
I have written an AJP adaptor for WebObjects as a framework called
"LEWOAJPAdaptor". This framework is independent and does not rely on
other libraries or frameworks -- other than WebObjects and Foundation
of course! There are advantages and disadvantages to deploying this
way, but it does mean that you should be able to avoid using
"wotaskd", "JavaMonitor" and the "WebObjects Apache Adaptor" and just
rely on elements with come with Apache 2.2 to support the deployment.
This framework is supplied with my "LEWOStuff" distribution and there
are usage instructions in the "LEWOStuffOverview.pdf" (search for
"AJP Adaptor" toward the end) that is distributed with it. Further
usage information can be obtained from the Apache 2.2 documentation.
The license for this is shipped with the distribution.
http://homepage.mac.com/andrewlindesay/le/downloads/
lewostuff_distrib_14july2007_1730.gnutar.gz
This framework has not been live-deployed yet so is "beta/test
quality" -- so I would be interested to hear if anybody does test it
and has any issues.
___
Andrew Lindesay
technology : www.lindesay.co.nz
business : www.silvereye.co.nz
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