網頁壓縮可以節省傳輸頻寬,同時也節省傳輸時間(不過如果加上CPU運算的時間可能會打點折)
先檢查網站有沒有支援HTTP Compression
http://www.seoconsultants.com/tools/compression.asp
如果沒有的話,Apache 2的
mod_deflate模組可幫我們完成這個任務
由於CentOS 4.4 預設安裝的Apache 2已將安裝好mod_deflate.so,所以我們只要將下列的設定加到/etc/httpd/conf/httpd.conf即可
<Location />
# 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)$ no-gzip dont-vary
# Make sure proxies don't deliver the wrong content
Header append Vary User-Agent env=!dont-vary
</Location>
重新啟動Apache,再到上面的網站檢查看看,如果出現Compressed (gzip),就成功了。