Downside is that this consumes significant disk space, requires
recreating the entire cache when changing something to the way that
pages are rendered and removes flexibility to add dynamic
render-influencing settings in the future.
Alas, crawlers are getting more aggressive and I don't like the idea of
adding more invasive anti-bot tech.
This might not be enough in the long term, we also have a few slow SQL
queries that I'm not yet sure how to optimize. But this ought to give us
more time, at least.
