Technical data
Supported Software, Technologies, and Protocols
1-6 Oracle iPlanet Web Proxy Server Release Notes
...
DNS fn="dns-lookup"
....
Init fn="dns-lookup-init" servers="170.168.10.3, 170.158.10.4"
</Object>
Information about the Parameter
cont
The
dns-lookup
SAF takes a
cont
parameter (for continue), which is
true
by default. If
the embedded DNS resolution fails, the server reverts to the system DNS resolution. If
set to
false
, the server reports an error when embedded DNS resolution fails.
1.5.5 ACL Cache Tuning
ACLCacheMax
is a
magnus.conf
parameter that sets a limit to the total number of ACLs
stored in the ACL cache. There is no default value for
ACLCacheMax
and it should be
configured for a specific limit.
For example,
ACLCacheMax 16384
GCAtStartup
is a
magnus.conf
parameter that allows a Boolean value. By default, the
value is false; if set to true, cache garbage collector clears the garbage during the server
startup. This can increase the server startup time when the cache size is large.
1.5.6 Cache
PURGE
Feature
Oracle iPlanet Web Proxy Server allows
PURGE
requests to clear the cached URL. If the
requested URL is purged successfully, a response with an HTTP status code of 200
(OK) is sent by the server. If the specified URL is not cached, a 404 (Not Found)
response is sent.
In the following example, the server returns the value 200:
bash-2.03$ telnet localhost 8088
Trying 172.9.10.1...
Connected to localhost.
Escape character is '^]'.
PURGE http://foo.com/ HTTP/1.0
HTTP/1.1 200 OK
Server: Oracle-iPlanet-Proxy-Server/4.0
Date: Fri, 26 Oct 2007 08:15:30 GMT
Connection: close
In the following example, the server returns the value 404:
Connection closed by foreign host.
bash-2.03$ telnet localhost 8088
Trying 172.9.10.1...
Connected to localhost.
Escape character is '^]'.
PURGE http://foo.com/ HTTP/1.0
HTTP/1.1 404 Not Found
Server: Oracle-iPlanet-Proxy-Server/4.0
Note: The ACL cache in this context does not refer to the ACL user
cache. It refers to a cache where ACLs are applicable to specific URLs
that are cached for performance reasons.