Link preloading

[timacdonald]

Using instant.page, we preload any links to the same domain on hover, making the documentation navigation feel blazingly fast,

I've introduced the cache headers public, max-age=300 so that the client's browsers is able to store the HTML responses in its cache, otherwise preloading has no impact.

I figure 10 minutes is a sensible length. If you navigate back to a page you have recently been on you don't need to re-download it.

Worst case scenario: we deploy changes and the client doesn't see them for 10 minutes if they have just downloaded the page.

[timacdonald]

These link changes just mean that the clients don't have to make 2 requests to get to the docs page, i.e, request to /docs which redirects to /docs/{currentVersion}