PFADD key $i > /dev/null $ rediscli PFCOUNT key (integer) 1001 $ for i in `seq 1000`; rediscli PFADD key $i > /dev/null $ rediscli PFCOUNT key (integer) 1001 $ for i in `seq 100`; rediscli PFADD foo a$i > /dev/null $ rediscli PFCOUNT foo (integer) 99 $ rediscli PFMERGE merged key foo OK $ rediscli PFCOUNT merged (integer) 1103