Shulou(Shulou.com)06/01 Report--

Is there a judgment value for redis? In view of this problem, this article introduces the corresponding analysis and answers in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way.

Redis supports five data types:

String (string)

Hash (hash)

List (list)

Set (collection)

Zset (sorted set: ordered set)

Redis determines whether the value exists.

SISMEMBER in the collection and ZRANK, ZREVRANK, and ZSCORE in the ordered set can all determine whether the member is in the collection or not!

Example:

Command for set in redis to determine whether a certain value exists in the value of a key: sismember, if it exists, returns 1, but does not return 0.

127.0.0.1 sismember mySet 6379 > sismember mySet 3-the return value is 0, because there is only one set member of myset, not 3127.0.1 set 6379 > set 2-return value is 1, because there are 2. This is the end of the answer to the question about whether there is a judgment value in redis. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.