We should only render a book once for each file type.
Maybe this is a storage issue at the rendering server? If so, the rendered book could be transferred to the requesting wiki.
Content will eventually become out-of-date, so we would need to define a maximum cache age. Also, it would be helpful to provide a "purge" action to force rerendering.
Version: master
Severity: enhancement
See Also:
http://web.archive.org/web/20090729074020/http://code.pediapress.com/wiki/ticket/268
https://bugzilla.wikimedia.org/show_bug.cgi?id=62592