Leverage browser caching for external files : <p>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?</p>

<pre><code>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)
</code></pre>
