def visit_num_increment(cls, key_name):
conn.hset(key_name, 'visit_num',
int(conn.hget(key_name, 'visit_num').decode()) + 1)
def set_target_url(cls, key_name, url):
conn.hset(key_name, 'target_url', url[1:])
def update_last_visit_time(cls, key_name):
conn.hset(key_name, 'last_visit_time', time.time())
def __init__(self, key_name):
conn.hset(key_name, 'visit_num', 1)
conn.hset(key_name, 'last_visit_time', time.time())
conn.hset(key_name, 'target_url', '')