the main motivation behind this is metacpan. It relies on
the 02package.details.txt file to provide which modules are
considered 'latest'. Currently, the generation of this file
lags behind because it's generated once an hour. This patch
will regenerate this file (and others) with every upload to
pause. This has benefits for the whole cpan toolchain as well.
Command line tools like `cpan` will be able to install versions
of recently uploaded releases immediately (after getting the
up-to-date 02packages file).
I'm aware of the fact that this will put some additional load
on the box and requires more bandwidth for rrr mirrors. But
considering the pro and cons, I think it's worth it.