Question

我在服务器上启用了mod_expires和mod_headers，以及htaccess中的代码：

<FilesMatch "\.(htm|html|xhtml|css|js|php)$">
AddDefaultCharset UTF-8
Header set Content-Language "en-US"
</FilesMatch>

<IfModule mod_headers.c>
Header set Vary "Accept-Encoding"
</IfModule>

php_value session.cookie_domain "www.domain.com"

Options -Indexes

# year
<FilesMatch "\.(ico|pdf|flv|jpg|jpeg|png|gif|swf|mp3|mp4)$">
Header set Cache-Control "public"
Header set Expires "Thu, 15 Apr 2010 20:00:00 GMT"
Header unset Last-Modified
</FilesMatch>
#2 hours
<FilesMatch "\.(html|htm|xml|txt|xsl)$">
Header set Cache-Control "max-age=7200, must-revalidate"
</FilesMatch>
<FilesMatch "\.(js|css)$">
SetOutputFilter DEFLATE
Header set Expires "Thu, 15 Apr 2010 20:00:00 GMT"
</FilesMatch>
<FilesMatch ".(eot|ttf|otf|woff)">
<IfModule mod_headers.c>
Header set Access-Control-Allow-Origin "*.domain.com"
</IfModule>
</FilesMatch>

<IfModule mod_deflate.c>
# Force deflate for mangled headers developer.yahoo.com/blogs/ydn/posts/2010/12/pushing-beyond-gzipping/
<IfModule mod_setenvif.c>
<IfModule mod_headers.c>
SetEnvIfNoCase ^(Accept-EncodXng|X-cept-Encoding|X{15}|~{15}|-{15})$ ^((gzip|deflate)\s*,?\s*)+|[X~-]{4,13}$ HAVE_Accept-Encoding
RequestHeader append Accept-Encoding "gzip,deflate" env=HAVE_Accept-Encoding
</IfModule>
</IfModule>
# Compress all output labeled with one of the following MIME-types
# (for Apache versions below 2.3.7, you don't need to enable `mod_filter`
# and can remove the `<IfModule mod_filter.c>` and `</IfModule>` lines as
# `AddOutputFilterByType` is still in the core directives)
<IfModule mod_filter.c>
AddOutputFilterByType DEFLATE application/atom+xml \
application/javascript \
application/json \
application/rss+xml \
application/vnd.ms-fontobject \
application/x-font-ttf \
application/xhtml+xml \
application/xml \
font/opentype \
image/svg+xml \
image/x-icon \
text/css \
text/html \
text/plain \
text/x-component \
text/xml
</IfModule>
</IfModule>

Options +FollowSymlinks
RewriteEngine On

<ifModule mod_headers.c>
Header unset ETag
</ifModule>
FileETag None

<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 (thx 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"

# Favicon (cannot be renamed)
  ExpiresByType image/x-icon              "access plus 1 month"

# Media: images
  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"

# HTC files  (css3pie)
  ExpiresByType text/x-component          "access plus 1 month"

# Webfonts
  ExpiresByType font/truetype             "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 month"
  ExpiresByType application/javascript    "access plus 1 month"
  ExpiresByType text/javascript           "access plus 1 month"

  <IfModule mod_headers.c>
    Header append Cache-Control "public"
  </IfModule>

</IfModule>

在Google pagespeed的GTmatrix中我有100％但是在Yslow上有＃34;添加过期标题＆＃34;我已经尝试了所有的东西，但我似乎无法让Yslow工作。有人可以帮忙吗？感谢。

Answer 1

您将过期设置为过去，这意味着它们会立即过期。添加过期标题背后的想法是，您告诉浏览器它甚至不需要为此资源发出http请求，直到将来中的某个日期，而应该只使用它缓存的副本。

在您知道不会改变的资产上使用它可能只是一个好主意。如果您最终更改了具有未来过期日期的资产，您需要更改它的网址（您可以通过在最后添加查询字符串来完成，例如blah.css？1234。

还要检查资产的响应标头中的expires标头是否已通过Web检查器检查它们。

在Yslow上添加Expires标头不会产生任何影响

1 个答案: