Nortel Web OS 10.0, Application Manual

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Web OS 10.0 Application Guide
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Chapter 15: Content Intelligent Switching
212777-A, February 2002
The switch is preconfigured with a list of 13 noncacheable items that you can add to, delete, or
modify. These items are either known dynamic content file extensions or dynamic URL
parameters, as described below:
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Dynamic content files:
o
Common gateway interface files (.cgi)
o
cold fusion files (.cfm), ASP files (.asp)
o
BIN directory
o
CGI-BIN directory
o
SHTML (scripted html)
o
Microsoft HTML extension files (.htx)
o
executable files (.exe)
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Dynamic URL parameters: +, !, %, =, &
Figure 15-5 URL-Based Web Cache Redirection
Requests matching the URL are load balanced among the multiple servers, depending on the
metric specified for the real server group (
leastconns is the default).
Web Cache Redirector
Non-HTTP GET
GET/www
.hostc.com/cgi-bin/scr
ipt.bin
GET/http://finance
.yahoo.com/q?s=hwp%2C+ibm%d=v1
GET/product/Webswitch.html
GET/company/information.html
GET/compan
y/imag
es/s
witch.gif
Internet
Host A
Implicit load balancing
within the group
/product
information
Host B
Host C
images
$
$
$