Nedávno jsem zkoumal co vlastně znamená gzip komprese. Zjistil jsem, že je dobré ji mít aktivovanou pro zrychlení načítání. Zároveň jsem ale narazil na zajímavou úpravu .htaccess. Myslíte, že má smysl tu úpravu používat? Konkrétně se mi jedná o situaci použití na phpBB. Zkoušel jsem se zeptat na české podpoře, ale odpovědi jsem se nedočkal. :/
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# ---------------------------------------------------------
# Proper MIME type for all files
# CZ: Normalizace MIME typu pro vsechny soubory
# ------------------------------------------------------------
# JavaScript
# Normalize to standard type (it's sniffed in IE anyways)
# tools.ietf.org/html/rfc4329#section-7.2
AddType application/javascript js
# Audio
AddType audio/ogg oga ogg
AddType audio/mp4 m4a
# Video
AddType video/ogg ogv
AddType video/mp4 mp4 m4v
AddType video/webm webm
# SVG
# Required for svg webfonts on iPad
# twitter.com/FontSquirrel/status/14855840545
AddType image/svg+xml svg svgz
AddEncoding gzip svgz
# Webfonts
AddType application/vnd.ms-fontobject eot
AddType application/x-font-ttf ttf ttc
AddType font/opentype otf
AddType application/x-font-woff woff
# Assorted types
AddType image/x-icon ico
AddType image/webp webp
AddType text/cache-manifest appcache manifest
AddType text/x-component htc
AddType application/x-chrome-extension crx
AddType application/x-opera-extension oex
AddType application/x-xpinstall xpi
AddType application/octet-stream safariextz
AddType application/x-web-app-manifest+json webapp
AddType text/x-vcard vcf
# ----------------------------------------------------------------
# Expires headers (for better cache control)
# CZ: Hlavicky pro kontrolu nastaveni expirace
# ----------------------------------------------------------------
# These are pretty far-future expires headers.
# They assume you control versioning with cachebusting
# CZ: Toto jsou hlavicky s velmi dlouhou dobou expirace
# CZ: Predpokladaji ze vyuzivate cachebusting techniku
# Additionally, consider that outdated proxies may miscache
# CZ: Nektere zastarale proxy mohou cachovat chybne
# www.stevesouders.com/blog/2008/08/23/revving-filenames-dont-use-querystring/
<IfModule mod_expires.c>
ExpiresActive on
# Perhaps better to whitelist expires rules? Perhaps.
ExpiresDefault "access plus 1 month"
# cache.appcache needs re-requests in FF 3.6 (thanks Remy ~Introducing HTML5)
ExpiresByType text/cache-manifest "access plus 0 seconds"
# Your document html
ExpiresByType text/html "access plus 0 seconds"
# Data
ExpiresByType text/xml "access plus 0 seconds"
ExpiresByType application/xml "access plus 0 seconds"
ExpiresByType application/json "access plus 0 seconds"
# Feed
ExpiresByType application/rss+xml "access plus 1 hour"
ExpiresByType application/atom+xml "access plus 1 hour"
# Favicon (cannot be renamed)
ExpiresByType image/x-icon "access plus 1 week"
# Media: images, video, audio
ExpiresByType image/gif "access plus 1 month"
ExpiresByType image/png "access plus 1 month"
ExpiresByType image/jpg "access plus 1 month"
ExpiresByType image/jpeg "access plus 1 month"
ExpiresByType video/ogg "access plus 1 month"
ExpiresByType audio/ogg "access plus 1 month"
ExpiresByType video/mp4 "access plus 1 month"
ExpiresByType video/webm "access plus 1 month"
# HTC files (css3pie)
ExpiresByType text/x-component "access plus 1 month"
# Webfonts
ExpiresByType application/x-font-ttf "access plus 1 month"
ExpiresByType font/opentype "access plus 1 month"
ExpiresByType application/x-font-woff "access plus 1 month"
ExpiresByType image/svg+xml "access plus 1 month"
ExpiresByType application/vnd.ms-fontobject "access plus 1 month"
# CSS and JavaScript
ExpiresByType text/css "access plus 1 year"
ExpiresByType application/javascript "access plus 1 year"
</IfModule>
# ---------------------------------------------------------------
# ETag removal
# CZ: Odstraneni ETagu
# ---------------------------------------------------------------
# FileETag None is not enough for every server.
# FileETag None neni dostacujici pro vsechny servery.
<IfModule mod_headers.c>
Header unset ETag
</IfModule>
# Since we're sending far-future expires, we don't need ETags for
# static content.
# CZ: Protoze nase expirace je daleko v budoucnu nepotrebujeme odesilat ETag pro staticky obsah.
# http://developer.yahoo.com/performance/rules.html#etags
FileETag None
A pokud to správně chápu, tak pokud upravím:
Kód: Vybrat vše
"access plus 1 month"
třeba na:
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"access plus 2 month"
tak to znamená, že expiruje (tedy prohlížeč bude znovu stahovat data) až po 2 měsících?