为什么添加过期标头后，杠杆浏览器的缓存分数没有变化？

Question

我通过https://gtmetrix.com/检查了我的网站速度和性能得分，GTMetrix建议添加过期标头以提高页面速度（利用浏览器缓存）。

因此，我按照指示在.htaccess中添加了以下到期标头，但是当我通过 GTMetrix 重新检查速度时，没有显示任何改进。不知道我错过了什么？

服务器：Apache

PHP版本：7.2

Expire标头放置在.htaccess的末尾

<IfModule mod_expires.c>
ExpiresActive on

# Perhaps better to whitelist expires rules? Perhaps.
ExpiresDefault "access plus 1 month"

# 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 week"

# Media: images, video, audio
ExpiresByType image/gif "access plus 1 month"
ExpiresByType image/png "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"

# 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"
ExpiresByType application/x-javascript "access plus 1 year"
ExpiresByType text/x-javascript "access plus 1 year"
ExpiresByType text/javascript "access plus 1 year"

</IfModule>

#ENABLING GZIP COMPRESSION

<IfModule mod_deflate.c>
  AddOutputFilterByType DEFLATE x-font/otf x-font/ttf x-font/eot
  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
  AddOutputFilterByType DEFLATE text/xml

  # Remove browser bugs (only needed for really old browsers)
  BrowserMatch ^Mozilla/4 gzip-only-text/html
  BrowserMatch ^Mozilla/4\.0[678] no-gzip
  BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
  Header append Vary User-Agent
</IfModule>


# for third party js css
<IfModule mod_expires.c>
    ExpiresActive On
    ExpiresDefault "access plus 7200 seconds"
    ExpiresByType text/javascript "access plus 2592000 seconds"
    ExpiresByType application/javascript A2592000
    ExpiresByType application/x-javascript "access plus 2592000 seconds"
</IfModule>

# Cache-Control Headers
<IfModule mod_headers.c>
    <FilesMatch "\.(js)$">
        Header set Cache-Control "max-age=2592000, private"
    </FilesMatch>
    <FilesMatch ".(js|css|xml|gz|html)$">
    Header append Vary: Accept-Encoding
  </FilesMatch>
</IfModule>

添加过期标头前后的速度：