I have Tomcat's compression enabled:
<Connector port="8080" maxHttpHeaderSize="8192"
maxThreads="200" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="20000" disableUploadTimeout="true"
compression="on"
compressionMinSize="2048"
noCompressionUserAgents="gozilla, traviata"
compressableMimeType="text/html,text/xml,text/javascript,text/css"/>
It works as expected for all my resources (stylesheets, scripts, etc)
except for one static file, which has the extension .cache.html (in
case you're wondering, it contains scripts generated by GWT). This
file is pretty large - about 150K, but Tomcat doesn't compress it for
some reason.
Here are the response headers for this file (I have a custom filter
that sets the cache headers prior to forwarding the request up the
chain):
Server Apache-Coyote/1.1
Cache-Control public, max-age=315360000
Expires Wed, 28 Mar 2018 18:58:38 GMT
Etag W/"136900-1206809984000"
Last-Modified Sat, 29 Mar 2008 16:59:44 GMT
Content-Type text/html
Content-Length 136900
Date Sun, 30 Mar 2008 20:44:14 GMT
Here are the response headers for a file that gets properly compressed
(which also passes through the same filter):
Server Apache-Coyote/1.1
Pragma no-cache
Cache-Control max-age=0, no-store, no-cache, must-revalidate
Expires Thu, 01 Jan 1970 00:00:00 GMT
Etag W/"4869-1206809984000"
Last-Modified Sat, 29 Mar 2008 16:59:44 GMT
Content-Type text/javascript
Transfer-Encoding chunked
Content-Encoding gzip
Vary Accept-Encoding
Date Sun, 30 Mar 2008 20:44:14 GMT
I don't see any relevant errors in my log files. I'm using Tomcat
5.5.26 on Linux. As a strange twist, the file does get compressed
properly with Tomcat 5.5.26 on Windows.
Any ideas?
Thanks in advance for your help!
Alex
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