htaccess mod_headers无需缓存

htaccess mod_headers无需缓存

的组合

SetEnvIf

以及

Header

可能做的伎俩：

# Image, CSS and Javascript requests normally contain the Referer header# which tells apache which page is requesting the resource# Use SetEnvIf directive to set a flag for internal usesSetEnvIf Referer preview.jsp force_no_cache# Header directive optionally accepts env= argument# If present, the directive is fired if the flag is setHeader unset ETag env=force_no_cache# repeat for other headers