User manual

Cobalt CacheRaQ Administration
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peers, as described above in “Inter-Cache Protocol (ICP)
Settings.” With this configuration, the Cluster Master will (as
usual) send all requests to the Cluster Slaves, which will then
query the ICP peers that have been configured.
Filter Setup
The CacheRaQ is capable of filtering HTTP traffic that passes
through it. The Filter Setup page allows you to choose among
three options:
• No Filtering. The CacheRaQ allows all HTTP traffic. This is
the default option.
• Deny Access. The CacheRaQ will disallow access to
specified sites and URLs.
• Limit Access. The CacheRaQ will deny access to all sites and
URLs except ones that are explictly specified. This can be
useful in environments (educational environments, for
example) where only specific sites are intended to be
accessed.
If you use the Deny Access or Limit Access modes, enter the list
of relevant sites (server names or IP addresses) and URLs into the
text area shown on this page. Click the “Save Changes” button at
the bottom of the page to activate your filtering configuration.
Report Setup
This page configures optional e-mail reports that will be sent
nightly to the admin user. (E-mail to admin can be forwarded to
an arbitrary e-mail address. See “Maintenance” on page 24 for
information about how to configure the admin e-mail alias.)
Two types of e-mail reports can be optionally enabled:
• Summary Statistics. This report describes cache
performance in terms of traffic through the cache, documents
through the cache, cache hit and miss response times, and so
on. This information is identical to the Summary Statistics
information available in the Cache Statistics section of the
CacheRaQ Web interface (described in “Summary Statistics”
on page 21). The Summary Statistics output also includes
three graphs. These graphs illustrate the number of requests
as a function of time of day, the number of cache hits vs.
cache misses as a function of time of day, and the average