关闭etag,last-modifed

Ubuntu中安装apache2默认是没开启expires模块的,但是默认开启了etag和last-modified

首先需要开启此模块:

sudo ‍a2enmod expires

sudo service apache2 restart

然后在.htaccess文件中添加:

‍# enable expirations
ExpiresActive On
# expire images after a month in the client's cache
ExpiresByType image/gif A2592000
ExpiresByType image/png A2592000
ExpiresByType image/jpeg A2592000
# HTML, css and javascript documents are good for a week from the time they were changed
ExpiresByType text/html M604800
ExpiresByType text/css M604800
ExpiresByType application/javascript M604800

开启ETag只需在.htaccess文件中添加代码:

‍# turn ETag on
FileETag MTime Size

Apache关掉Etag和Last-Modified的方法,可能也只有我这种无聊的人才会做这种事情.哈哈,关掉etag和last-modified会出现什么样的情况。做一个这样的测试.

不要问我这二个参数是做什么的。。。。。在我的blog中有写.

Etag关掉的方法如下,加一个none

FileETag none

要关掉Last-Modified的方法麻烦点,先想好你要去掉Last-Modified 的标签。然后用header模块来控制

LoadModule headers_module modules/mod_headers.so

<FilesMatch "\.(gif|jpg|png)">
Header unset Last-Modified
</FilesMatch>

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