利用浏览器缓存,如何使用apache或.htaccess？

Question

该怎么办？我有一个巨大的文件列表,谷歌速度页称"利用浏览器缓存"..但我不知道如何？我是否弄乱或更改了Apache配置文件(如下所示)或者是否在我的.htaccess页面中添加了某些内容？

 <IfModule mod_proxy.c>
        ProxyRequests Off
        CacheRoot "/var/run/proxy"
        CacheSize 1024
        CacheGcInterval 24
    #CacheMaxExpire 24
    #CacheLastModifiedFactor 0.1
    #CacheDefaultExpire 1
    #NoCache a_domain.com another_domain.edu joes.garage_sale.com
        <Directory "disabled_proxy">
            Allow from example.com
            Deny from all
            Order Deny,Allow
        </Directory>
    </IfModule>
    ##
    #### mod_expires is configured so that all static files but images
    #### expire after 60 seconds. Any response that has a life span of more
    #### than 5 seconds (see webperfcache.conf) will be cached by webperfcache.
    #### Make sure your CGIs return a "Cache-Control: no-cache" header if you
    #### elect to make your dynamically generated HTML pages not cache-able.
    #### If all your HTML pages are static you may also increase ExpiresDefault.

    <IfModule mod_expires.c>
        ExpiresActive On
        ExpiresDefault A60
        ExpiresByType image/bmp A3600
        ExpiresByType image/gif A3600
        ExpiresByType image/ief A3600
        ExpiresByType image/jpeg A3600
        ExpiresByType image/png A3600
        ExpiresByType image/tiff A3600
        ExpiresByType image/x-cmu-raster A3600
        ExpiresByType image/x-portable-anymap A3600
        ExpiresByType image/x-portable-bitmap A3600
        ExpiresByType image/x-portable-graymap A3600
        ExpiresByType image/x-portable-pixmap A3600
        ExpiresByType image/x-rgb  A3600
        ExpiresByType image/x-xbitmap A3600
        ExpiresByType image/x-xpixmap A3600
        ExpiresByType image/x-xwindowdump A3600
        ExpiresByType audio/basic A3600
        ExpiresByType audio/midi A3600
        ExpiresByType audio/mpeg A3600
        ExpiresByType audio/x-aiff A3600
        ExpiresByType audio/x-pn-realaudio A3600
        ExpiresByType audio/x-pn-realaudio-plugin A3600
        ExpiresByType audio/x-realaudio A3600
        ExpiresByType audio/x-wav A3600
        ExpiresByType video/mpeg A3600
        ExpiresByType video/quicktime A3600
        ExpiresByType video/x-msvideo A3600
        ExpiresByType video/x-sgi-movie A3600
    </IfModule>

Answer 1

我抓住机会提供完整的.htaccess代码以传递Google PageSpeed Insight:

1. 启用压缩
2. 利用浏览器缓存

# Enable Compression
<IfModule mod_deflate.c>
  AddOutputFilterByType DEFLATE application/javascript
  AddOutputFilterByType DEFLATE application/rss+xml
  AddOutputFilterByType DEFLATE application/vnd.ms-fontobject
  AddOutputFilterByType DEFLATE application/x-font
  AddOutputFilterByType DEFLATE application/x-font-opentype
  AddOutputFilterByType DEFLATE application/x-font-otf
  AddOutputFilterByType DEFLATE application/x-font-truetype
  AddOutputFilterByType DEFLATE application/x-font-ttf
  AddOutputFilterByType DEFLATE application/x-javascript
  AddOutputFilterByType DEFLATE application/xhtml+xml
  AddOutputFilterByType DEFLATE application/xml
  AddOutputFilterByType DEFLATE font/opentype
  AddOutputFilterByType DEFLATE font/otf
  AddOutputFilterByType DEFLATE font/ttf
  AddOutputFilterByType DEFLATE image/svg+xml
  AddOutputFilterByType DEFLATE image/x-icon
  AddOutputFilterByType DEFLATE text/css
  AddOutputFilterByType DEFLATE text/html
  AddOutputFilterByType DEFLATE text/javascript
  AddOutputFilterByType DEFLATE text/plain
</IfModule>
<IfModule mod_gzip.c>
  mod_gzip_on Yes
  mod_gzip_dechunk Yes
  mod_gzip_item_include file .(html?|txt|css|js|php|pl)$
  mod_gzip_item_include handler ^cgi-script$
  mod_gzip_item_include mime ^text/.*
  mod_gzip_item_include mime ^application/x-javascript.*
  mod_gzip_item_exclude mime ^image/.*
  mod_gzip_item_exclude rspheader ^Content-Encoding:.*gzip.*
</IfModule>

# Leverage Browser Caching
<IfModule mod_expires.c>
  ExpiresActive On
  ExpiresByType image/jpg "access 1 year"
  ExpiresByType image/jpeg "access 1 year"
  ExpiresByType image/gif "access 1 year"
  ExpiresByType image/png "access 1 year"
  ExpiresByType text/css "access 1 month"
  ExpiresByType text/html "access 1 month"
  ExpiresByType application/pdf "access 1 month"
  ExpiresByType text/x-javascript "access 1 month"
  ExpiresByType application/x-shockwave-flash "access 1 month"
  ExpiresByType image/x-icon "access 1 year"
  ExpiresDefault "access 1 month"
</IfModule>
<IfModule mod_headers.c>
  <filesmatch "\.(ico|flv|jpg|jpeg|png|gif|css|swf)$">
  Header set Cache-Control "max-age=2678400, public"
  </filesmatch>
  <filesmatch "\.(html|htm)$">
  Header set Cache-Control "max-age=7200, private, must-revalidate"
  </filesmatch>
  <filesmatch "\.(pdf)$">
  Header set Cache-Control "max-age=86400, public"
  </filesmatch>
  <filesmatch "\.(js)$">
  Header set Cache-Control "max-age=2678400, private"
  </filesmatch>
</IfModule>

此处还提供了各种Web服务器的一些配置.
希望这有助于获得100/100分.

Answer 2

我几天前也在做同样的事情.将此添加到我的.htaccess文件中:

ExpiresActive On
ExpiresByType image/gif A2592000
ExpiresByType image/jpeg A2592000
ExpiresByType image/jpg A2592000
ExpiresByType image/png A2592000
ExpiresByType image/x-icon A2592000
ExpiresByType text/css A86400
ExpiresByType text/javascript A86400
ExpiresByType application/x-shockwave-flash A2592000
#
<FilesMatch "\.(gif¦jpe?g¦png¦ico¦css¦js¦swf)$">
Header set Cache-Control "public"
</FilesMatch>

现在,当我运行谷歌速度页面时,利用浏览器缓存不再是一个高优先级.

希望这可以帮助.

Answer 3

这就是我用来控制标题/缓存的方法,我不是Apache专业人员,所以请告诉我是否还有改进的余地,但我知道这一段时间以来我的所有网站都运行良好.

指定mod_expires

http://httpd.apache.org/docs/2.2/mod/mod_expires.html

此模块控制服务器响应中的Expires HTTP标头和Cache-Control HTTP标头的max-age指令的设置.到期日期可以设置为相对于上次修改源文件的时间或客户端访问的时间.

这些HTTP标头是客户端有关文档有效性和持久性的指令.如果缓存,则可以从缓存而不是从源获取文档,直到此时间过去.之后,缓存副本被视为"已过期"且无效,并且必须从源获取新副本.

# BEGIN Expires
<ifModule mod_expires.c>
ExpiresActive On
ExpiresDefault "access plus 1 seconds"
ExpiresByType text/html "access plus 1 seconds"
ExpiresByType image/gif "access plus 2592000 seconds"
ExpiresByType image/jpeg "access plus 2592000 seconds"
ExpiresByType image/png "access plus 2592000 seconds"
ExpiresByType text/css "access plus 604800 seconds"
ExpiresByType text/javascript "access plus 216000 seconds"
ExpiresByType application/x-javascript "access plus 216000 seconds"
</ifModule>
# END Expires

mod_headers中

http://httpd.apache.org/docs/2.2/mod/mod_headers.html

该模块提供了控制和修改HTTP请求和响应头的指令.标题可以合并,替换或删除.

# BEGIN Caching
<ifModule mod_headers.c>
<filesMatch "\.(ico|pdf|flv|jpg|jpeg|png|gif|swf)$">
Header set Cache-Control "max-age=2592000, public"
</filesMatch>
<filesMatch "\.(css)$">
Header set Cache-Control "max-age=604800, public"
</filesMatch>
<filesMatch "\.(js)$">
Header set Cache-Control "max-age=216000, private"
</filesMatch>
<filesMatch "\.(xml|txt)$">
Header set Cache-Control "max-age=216000, public, must-revalidate"
</filesMatch>
<filesMatch "\.(html|htm|php)$">
Header set Cache-Control "max-age=1, private, must-revalidate"
</filesMatch>
</ifModule>
# END Caching

Answer 4

首先,我们需要检查是否已启用mod_headers.c和mod_expires.c.

sudo apache2 -l

如果我们没有它,我们需要启用它们

sudo a2enmod headers

然后我们需要重启apache

sudo apache2 restart

最后,在.htaccess上添加规则(见其他答案),例如

ExpiresActive On
ExpiresByType image/gif A2592000
ExpiresByType image/jpeg A2592000
ExpiresByType image/jpg A2592000
ExpiresByType image/png A2592000
ExpiresByType image/x-icon A2592000
ExpiresByType text/css A86400
ExpiresByType text/javascript A86400
ExpiresByType application/x-shockwave-flash A2592000
#
<FilesMatch "\.(gif|jpe?g|png|ico|css|js|swf)$">
Header set Cache-Control "public"
</FilesMatch>