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redis commands zsets zismember
ZISMEMBER
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|
Redis Regular Inspection / Technical Support
|
Redis Enterprise Server
|
|---|
Check whether a member exists in the set
Usage: zismember key member.
Returns 1 if it exists, 0 otherwise.
Example
| Command> | zismember zset1 "Member_1" |
| Result> | 1 Exists |
| Command> | zismember zset1 "Member_X" |
| Result> | 0 Does not exist |
| This command is available in the Enterprise version. |
Syntax
ZISMEMBER key member
- Available since Redis Enterprise version 6.0.0.
- Time complexity is O(1).
| << BZPOPMAX | ZISMEMBER | ZRANDMEMBER >> |
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