This patch set adds logic to optimize performance around rendered
documents caching further by implementing logic to skip over
post-rendering validation when cache hits occur. This works because:
* if the result set isn't cached, then post-validation is performed;
if the post-validation fails the just-cached result set is
invalidated
* if the result set is cached, then post-validation for that
result set has already been performed successfully, so it
can be safely skipped over
It was discovered via profiler anaylsis that document validation
accounts for an appreciable amount of run time, so optimizing
around this makes a noticeable difference.
Change-Id: I18344ea750cf1028a377028f80ecdd931d9672c0
18ae85a229