Showing posts with label OHS. Show all posts
Showing posts with label OHS. Show all posts

Thursday, May 15, 2008

Apache 2 Compression with mod_deflate

Today, after a report from one my users that the our APEX application was getting "slower", I decided to implement mod_deflate for content compression. The performance is noticeable faster! I went with mod_deflate since is included in the Apache 2.0.x source package. Here is what I added to my httpd.conf:

LoadFile /usr/lib/libz.so
LoadModule deflate_module modules/mod_deflate.so

<IfModule mod_deflate.c>
# Insert filter
SetOutputFilter DEFLATE
# Netscape 4.x has some problems...
BrowserMatch ^Mozilla/4 gzip-only-text/html
# Netscape 4.06-4.08 have some more problems
BrowserMatch ^Mozilla/4\.0[678] no-gzip
# MSIE masquerades as Netscape, but it is fine
# BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
# NOTE: Due to a bug in mod_setenvif up to Apache 2.0.48
# the above regex won't work. You can use the following
# workaround to get the desired effect:
BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html
# Don't compress images
SetEnvIfNoCase Request_URI \
\.(?:gif|jpe?g|png|htc|wsdl|exe|t?gz|bz2|sit|rar|pdf|zip)$ no-gzip dont-vary
# Make sure proxies don't deliver the wrong content
Header append Vary User-Agent env=!dont-vary
</IfModule>

After that I all did was a quick
opmnctl restartproc ias-component=HTTP_Server
and voila!

For more information on mod_deflate go to http://httpd.apache.org/docs/2.0/mod/mod_deflate.html