Leverage browser caching for external files

browser-cache google-pagespeed
martinsh3 picture martinsh3 · May 3, 2016 · Viewed 24.1k times · Source

i'm trying to get my google page speed insights rating to be decent, but there are some external files that i would want to be cached aswell, anyone knows what would be the best way to deal with this?

https://s.swiftypecdn.com/cc.js (5 minutes)
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js (60 minutes)
https://pagead2.googlesyndication.com/pagead/osd.js (60 minutes)
https://www.google-analytics.com/plugins/ua/linkid.js (60 minutes)
https://hey.hellobar.com/…d5837892514411fd16abbb3f71f0d400607f8f0b (2 hours)
https://www.google-analytics.com/analytics.js (2 hours)

Answer

Vladan picture Vladan · May 24, 2016

Copy to your server and serve locally or from CDN, with different browser cache settings. Update GA scripts periodically with cronjob or something similar.

On Wordpress there are plugins that can do that for you, like this one: Above The Fold; they call this feature Javascript localization.

On the other hand, I use Google Pagespeed Module on server and it's directive MapProxyDomain in combination with Alternative async tracking snippet. That seems most elegant for me.

This should be enough for you to start solving your problem.

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