Redis如何优雅的删除特定前缀key

redis-cli --raw keys "ops-coffee-*" | xargs redis-cli del

127.0.0.1:6379> scan 0 MATCH ops-coffee-* 
1) "38"
2) 1) "ops-coffee-25"
 2) "ops-coffee-19"
 3) "ops-coffee-29"
 4) "ops-coffee-10"
 5) "ops-coffee-23"
 6) "ops-coffee-5"
 7) "ops-coffee-14"
 8) "ops-coffee-16"
 9) "ops-coffee-11"
 10) "ops-coffee-15"
 11) "ops-coffee-7"
 12) "ops-coffee-1"
127.0.0.1:6379> scan 38 MATCH ops-coffee-* COUNT 1000
1) "0"
2) 1) "ops-coffee-13"
 2) "ops-coffee-9"
 3) "ops-coffee-21"
 4) "ops-coffee-6"
 5) "ops-coffee-30"
 6) "ops-coffee-20"
 7) "ops-coffee-2"
 8) "ops-coffee-12"
 9) "ops-coffee-28"
 10) "ops-coffee-3"
 11) "ops-coffee-26"
 12) "ops-coffee-4"
 13) "ops-coffee-31"
 14) "ops-coffee-8"
 15) "ops-coffee-22"
 16) "ops-coffee-27"
 17) "ops-coffee-18"
 18) "ops-coffee-24"
 19) "ops-coffee-17"

redis-cli --scan --pattern "ops-coffee-*" | xargs -L 2000 redis-cli del

> sscan ops-coffee 0 MATCH v1*
1) "7"
2) 1) "v15"
 2) "v13"
 3) "v12"
 4) "v10"
 5) "v14"
 6) "v1"

import redis

def del_big_set_key(key_name):
 r = redis.StrictRedis(host='localhost', port=6379)

 # count表示每次删除的元素数量，这里每次删除300元素
 for key in r.sscan_iter(name=key_name, count=300):
 r.srem(key_name, key)

del_big_set_key('ops-coffee')

import redis

def del_big_hash_key(key_name):
 r = redis.StrictRedis(host='localhost', port=6379)

 # hscan_iter获取出来的结果是个元祖，下边hdel删除用key[0]取到key
 for key in r.hscan_iter(name=key_name, count=300):
 r.hdel(key_name, key[0])

del_big_hash_key('ops-coffee')

import redis

def del_big_sort_key(key_name):
 r = redis.StrictRedis(host='localhost', port=6379)

 while r.zcard(key_name) > 0:
 # 判断集合中是否有元素，如有有则删除排行0-99的元素
 r.zremrangebyrank(key_name, 0, 99)

del_big_sort_key('ops-coffee')