I uploaded MoCo ver 0.05 today.
I fixed a bug that cached objects are not flushed correctly when they're stored without primary keys.
I added keys accessor to MoCo and changed flush mechanism.
If you define Entry.pm like this,
and, retrieve an entry from uri,
my $e = Entry->retrieve_by_uri('http://123');
and, create a new entry.
my $e2 = Entry->create(uri => 'http://123');
The first cache, $e is flushed correctly.
(I'm still considering about the name.)