A lot of idle clients

Does anybody know what is ?

id=8568423 addr=?:0 fd=15195 name= age=7092720 idle=7092720 flags=N db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=0 oll=0 omem=0 events=r cmd=NULL user=default
id=8568425 addr=?:0 fd=15221 name= age=7092720 idle=7092720 flags=N db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=0 oll=0 omem=0 events=r cmd=NULL user=default
id=8568426 addr=?:0 fd=15215 name= age=7092720 idle=7092720 flags=N db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=0 oll=0 omem=0 events=r cmd=NULL user=default
id=8568434 addr=?:0 fd=15226 name= age=7092720 idle=7092720 flags=N db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=0 oll=0 omem=0 events=r cmd=NULL user=default

Does your Redis client uses a connection pool?

i use twemproxy for connections, If that’s what you mean