| Nick Dakoronias 2004-01-19, 3:02 pm |
| Hello Edge Server Forum readers,
Looking for info on the LB (Load Balancer) capabilities of the Edge
Server
I came across the following abstract at the URL below:
http://www-3.ibm.com/software/webse...ver/lbfeat.html
<------------------- s n i p ------------------------------>
Kernel-Level Content-Based Routing (CBR) allows improved, high
performance layer 7 HTTP request routing. Requests may be routed based
on URI or any combination of HTTP headers providing maximum flexibility
in server farm and application deployment.
Proxy-Level Content-Based Routing (CBR) provides the same level of
improved layer 7 HTTP routing function as kernel-level CBR, but adds the
ability to look inside secure HTTPS requests as well. Additionally,
proxy-level CBR can be used as a "plug-able" load balancing solution
within the proxy itself, providing unparalleled integration with other
proxy cache functions.
<------------------- s n i p ------------------------------>
Does this means that all replies from the WAS will also go through the
LB on their way back to the reverse proxy (since the LB is acting as an
HTTP -i.e. layer 7- proxy rather than a layer 3 LB). Therefore the
Reverse Proxy Edge server will only ever see the IP address of the
Dispatcher/LB (and not of the individual WAS as previously feared).
Any advise will be much appreciated.
Regards, Nick Dakoronias
IBM/ ITS Greece
|