There’s a feature in ATS, which is poorly understood, and unsupported, which
intends to fetch content based on parsing HTML. It’s our belief that this is
either better done via either of
1) HTTP/2 and the LinkRel headers. Server PUSH might also help or
eliminate the need for this.
2) An external piece of software (or ATS plugin). For example, the
Pagespeed plugin could do this.
Eliminating this feature would also remove the configuration file
prefetch.config.
This is tracked in the Jira
https://issues.apache.org/jira/browse/TS-3167
Unless we hear otherwise within 1 week, this will be implemented for 6.0.0.
— Leif
