.htaccess - apache 2上的图像缓存问题

Question

我在根 .htaccess 中添加了下一个指令：

<IfModule mod_expires.c>
ExpiresActive On
ExpiresDefault "access plus 1 month"

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"

ExpiresByType text/html  "access plus 0 seconds"
ExpiresByType text/cache-manifest "access plus 0 seconds"

ExpiresByType text/xml "access plus 0 seconds"
ExpiresByType application/xml "access plus 0 seconds"
ExpiresByType application/json "access plus 0 seconds"

ExpiresByType application/rss+xml "access plus 1 hour"
ExpiresByType application/atom+xml "access plus 1 hour"

ExpiresByType image/x-icon "access plus 1 week"

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"

ExpiresByType text/css "access plus 1 year"
ExpiresByType application/javascript "access plus 1 year"
ExpiresByType text/javascript "access plus 1 year"

但是，没有任何效果，所有图像仍未缓存。我看到缓存以某种方式起作用，因为 js 和 css 文件被缓存但不是图像。我在我的网站上搜索了所有 htaccess，还检查了.conf文件夹中的所有文件，etc但找不到覆盖该规则的内容。

还有什么可能导致这样的问题？

标签： .htaccesscachingapache2