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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 27791] New: - mod_cache doesn't re-cache expired content
Date Thu, 18 Mar 2004 22:22:32 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=27791

mod_cache doesn't re-cache expired content

           Summary: mod_cache doesn't re-cache expired content
           Product: Apache httpd-2.0
           Version: 2.0.48
          Platform: Sun
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: mod_cache
        AssignedTo: bugs@httpd.apache.org
        ReportedBy: darron.wood@fmr.com


It looks like mod_cache isn't discarding expired content in cache.  I increased 
the LogLevel to debug and below is what I see in the log file when the content 
is expired in cache.  It appears that mod_cache sees it is expired, then goes 
to revalidate the content from the application server but never caches the new 
version. If I run snoop on my Apache Reverse Proxy server while the content is 
expired in cache I see the request go to the application server when it is 
requested and the copy in cache never gets updated and the expiration date is 
not reset.


[Thu Mar 18 11:16:14 2004] [info] disk_cache: Serving Cached URL 
server.com/infocenter/images/file.gif?
[Thu Mar 18 11:16:14 2004] [info] disk_cache: Served headers for URL 
server.com/infocenter/images/file.gif?
[Thu Mar 18 11:16:14 2004] [debug] mod_cache.c(259): cache: stale cache - test 
conditional
[Thu Mar 18 11:16:14 2004] [debug] mod_cache.c(263): cache: conditional - add 
cache_in filter and DECLINE
[Thu Mar 18 11:16:14 2004] [debug] proxy_http.c(109): proxy: HTTP: 
canonicalising URL //serverx.com:8100/infocenter/images/file.gif
[Thu Mar 18 11:16:14 2004] [debug] mod_proxy.c(459): Trying to run 
scheme_handler
[Thu Mar 18 11:16:14 2004] [debug] proxy_http.c(1076): proxy: HTTP: serving URL 
http://serverx.com:8100/infocenter/images/file.gif
[Thu Mar 18 11:16:14 2004] [debug] proxy_http.c(221): proxy: HTTP connecting 
http://serverx.com:8100/infocenter/images/file.gif to serverx.com:8100
[Thu Mar 18 11:16:14 2004] [debug] proxy_util.c(1203): proxy: HTTP: fam 2 
socket created to connect to serverx.com
[Thu Mar 18 11:16:14 2004] [debug] proxy_http.c(370): proxy: socket is connected
[Thu Mar 18 11:16:14 2004] [debug] proxy_http.c(404): proxy: connection 
complete to xx.xx.xxx.xx:8100 (serverx.com)
[Thu Mar 18 11:16:14 2004] [debug] proxy_http.c(979): proxy: header only
[Thu Mar 18 11:16:14 2004] [debug] mod_cache.c(436): cache: running CACHE_IN 
filter

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