PHP Class FluidTYPO3\Vhs\ViewHelpers\Asset\PrefetchViewHelper
Enables the special tag
which instructs the browser to start prefetching DNS
records for every domain listed in the domains attribute
of this ViewHelper. Prefetching starts as soon as the browser
becomes aware of the tag - to optimise even further, you may
wish to control the output buffer's size to deliver your site
HTML in chunks, the first chunk being the one containing this
ViewHelper.
Note that the web server daemon may send headers which prevent
this prefetching and that these headers can be added in many
ways. If prefetching does not work, you will need to inspect
the HTTP headers returned from the actual environment. Or you
may prefer to simply add force="TRUE" to this tag - but
beware that this will affect the entire document's behaviour,
not just for this particular set of domain prefetches. Once
force-enabled this setting cannot be disabled (unless done so
by manually adding an additional meta header tag as examplified
by the build() method.
### Example usage:
See: https://developer.mozilla.org/en-US/docs/Controlling_DNS_prefetching
