Adding expiry date or a maximum age to /wp-content/cache/wpfc-minified/files

Hi there,

Checking speed using Google Page Speed I hasve received this advice: Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Seems to list all the minified JS and CSS scripts here /wp-content/cache/wpfc-minified/

Is it possible to add these expiration dates? If so how do I implement?

Regards,
Olly

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