dongshushi5579 2011-09-07 17:11
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利用浏览器缓存 - CSS /图像的过期/缓存控制

After running a google Speed Test, one of the items is to "Leverage Browser Caching".

How do you set these values for static images or css files? This site uses CodeIgniter (php) and apache.

Thank you!

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  • donxbje866688 2011-09-07 17:17
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    In your Apache config:

    # Make stuff cacheable
    ExpiresActive On
    ExpiresDefault "access plus 1 day"
    
    # Typically dynamic PHP content
    ExpiresByType text/html "access plus 0 seconds"
    
    # PDF files don't need to be cached either
    ExpiresByType application/pdf "access plus 0 seconds"
    

    The rules should be fairly self-explanatory.

    You can set this globally, as above, and per virtual host:

    <Directory "/var/www/example.com">
            # Cache longer
            ExpiresDefault "access plus 1 year"
    </Directory>
    

    Recommended reading: Caching Tutorial, Apache Caching Guide

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