lease to write with TTL: etcdctl --endpoints=$ENDPOINTS lease grant 300# lease 2be7547fbc6a5afa granted with TTL(300s)etcdctl --endpoints=$ENDPOINTS put sample value --lease=2be7547fbc6a5afa etcdctl --endpoints=$ENDPOINTS get sample etcdctl --endpoints=$ENDPOINTS lease keep-alive 2be7547fbc6a5afa etcdctl --endpoints=$ENDPOINTS lease revoke 2be7547fbc6a5afa # or after 300 secondsetcdctl --endpoints=$ENDPOINTS get sample
