hash迭代器

遍历hash1 中以3 结尾的元素
遍历hash1 中以c开头的元素,每次读取 6 个元素
遍历hash1 中以b开头的元素,每次读取 3 个元素
127.0.0.1:6379[11]› HSCAN hash1 0 match *3

1. "0"
2. (empty list or set)
   127.0.0.1:6379[11]› HSCAN hash1 0 match c* count 6
3. "0"
4. 1. "c"
   2. "C"
   3. "c1"
   4. "C1"
   5. "c2"
   6. "C2"
      127.0.0.1:6379[11]› HSCAN hash1 0 match b* count 3
5. "0"
6. 1. "b"
   2. "B"
   3. "b1"
   4. "B1"
   5. "b2"
   6. "B2"
      127.0.0.1:6379[11]›