14 Steps - Mod_gzip

Una manera sencilla pero útil para ganar velocidad de transferencia es que el servidor comprima los elementos que van a ser enviados. Mediante mod_gzip le podemos indicar al servidor que cosas queremos enviar comprimidas. El cliente se encargará de descomprimir la información enviada. Útil cuando nuestra versión de apache es la 1.3.

Para activar el modulo mod_gzip:

# Enable the module
mod_gzip_on yes

# Allow GZIP compression for all requests
mod_gzip_item_include mime .?

# By file extension
SetEnvIfNoCase request_uri \.mdb$ gzip=9
SetEnvIfNoCase request_uri \.bmp$ gzip cache-enable=mem
SetEnvIfNoCase request_uri \.(?:jpg|gif|png|swf|avi|rm)$ no-gzip

# By MIME type
SetEnvIfNoCase mime text/.* gzip=9 cache-enable=mem
SetEnvIfNoCase mime audio/wav gzip cache-enable=mem
SetEnvIfNoCase mime image/bmp gzip cache-enable=mem
SetEnvIfNoCase mime message/rfc822 gzip

SetEnvIfNoCase mime application/msword gzip
SetEnvIfNoCase mime application/postscript gzip
SetEnvIfNoCase mime application/vnd.ms-excel gzip
SetEnvIfNoCase mime application/vnd.ms-powerpoint gzip
SetEnvIfNoCase mime application/vnd.ms-works gzip
SetEnvIfNoCase mime application/x-javascript gzip cache-enable=mem
SetEnvIfNoCase mime application/x-msaccess gzip
SetEnvIfNoCase mime application/pdf gzip

# Exceptions for old browsers
#BrowserMatchNoCase \bOpera(?:\s5\.|/5) and mime application/.* no-gzip vary-agent !cache-enable
#BrowserMatchNoCase \bMozilla/4\.[67] and (mime application/.* or mime image/.*) no-gzip vary-agent !cache-enable
#BrowserMatchNoCase \bNetscape(?:6/6\.|/) and mime application/.* no-gzip vary-agent !cache-enable
#BrowserMatchNoCase \bFirefox/1 and mime application/pdf no-gzip vary-agent !cache-enable

SetEnvIfNoCase (mime text/css) or (mime image/jpeg) vary-agent
BrowserMatchNoCase \bMSIE\s[567]\. and (mime text/css or mime image/jpeg) no-gzip vary-agent !cache-enable

# Vary header should be properly set for caching
Header merge Vary User-Agent env=vary-agent

# Set expiry delta for static content.
# Dynamic pages should set expiry delta by oneself.
Header merge Cache-Control max-age=86400 env=cache-enable