Hi Bernhard,

> Can you write a few sentences about the advantages

this patch is purely a performance improvement. Memcached has improved
the responsiveness of our install of roundup. As for figures, I should
be able to take a few moments to time some roundup requests with and
without memcached enabled and get a better sense of what the performance
gain is.

Note that by default, the patch does not change the current roundup
behaviour.

> Also an entry to changes would be intesting.

I'm not sure what you mean here?

Rodrigue