Non-stop Service: Active-Active Duplexing

Commands

Introduction
Strings
- STRINGS Introduction
- SET
- DEL
- GET
- GETEX 6.2
- GETDEL 6.2
- INCR
- DECR
- INCRBY
- DECRBY
- INCRBYFLOAT
- SETNX
- SETEX
- PSETEX
- MSET
- MGET
- MSETNX
- APPEND
- STRLEN
- SETRANGE
- GETRANGE
- STRALGO
- GETSET
Lists
- LISTS Introduction
- LPUSH
- RPOP
- LPOP
- RPUSH
- LRANGE
- LLS Ent
- LLEN
- LINDEX
- LPOS 6.0.6
- LSET
- LINSERT
- LREM
- LRM Ent
- LTRIM
- LMOVE 6.2
- RPOPLPUSH
- LPUSHX
- RPUSHX
- BLPOP
- BRPOP
- BLMOVE 6.2
- BRPOPLPUSH
Sets
- SETS Introduction
- SADD
- SREM
- SRM Ent
- SMEMBERS
- SLS Ent
- SCARD
- SLEN Ent
- SUNION
- SINTER
- SDIFF
- SUNIONSTORE
- SINTERSTORE
- SDIFFSTORE
- SISMEMBER
- SMISMEMBER 6.2
- SMOVE
- SPOP
- SRANDMEMBER
- SSCAN
Sorted Sets (ZSets)
Hashes
- HASHES Introduction
- HSET
- HDEL
- HRM Ent
- HGET
- HLEN
- HMSET
- HMGET
- HKEYS
- HVALS
- HGETALL
- HLS Ent
- HSTRLEN
- HINCRBY
- HINCRBYFLOAT
- HEXISTS
- HSETNX
- HSCAN
- HRANDFIELD 6.2
Streams
- STREAMS Introduction
- XADD
- XLEN
- XRANGE
- XREVRANGE
- XREAD
- XDEL
- XTRIM
- XGROUP
- XREADGROUP
- XACK
- XPENDING
- XCLAIM
- XAUTOCLAIM 6.2
- XINFO
Common Keys
- COMMON Introduction
- EXISTS
- UNLINK
- KEYS
- LS Ent
- LL Ent
- RM Ent
- SCAN
- SORT
- RENAME
- RENAMENX
- EXPIRE
- EXPIREAT
- TTL
- PEXPIRE
- PEXPIREAT
- PTTL
- PERSIST
- TYPE
- OBJECT
- RANDOMKEY
- COPY 6.2
- MOVE
- DUMP
- RESTORE
- MIGRATE
- TOUCH
- DB Ent 8.1.0
- DBALL Ent 8.1.0
- ETYPE Ent 8.1.0
- EKEYS Ent 8.1.0
- ELS Ent 8.1.0
- ELL Ent 8.1.0
- ERM Ent 8.1.0
- LOLWUT
- LS(old)
- LL(old)
Recyclebin New
Bits
- BITS Introduction
- SETBIT
- GETBIT
- BITOP
- BITCOUNT
- BITFIELD
- BITPOS
Pub/Sub
Lua Script
HyperLogLog(PF)
Geo
Connection
- Connection Introduction
- CONNECT
- AUTH
- HELLO 6.0
- ECHO
- PING
- QUIT
- SELECT
- CD Ent
- SWAPDB
- RESET 6.2
Redis on Windows

SISMEMBER

Apply for Redis Developer Course	Redis Regular Inspection / Technical Support	Redis Enterprise Server

Check whether a member exists in a set

Usage is sismember key member.
Returns 1 if it exists, 0 if it does not.

Example

Command>	sadd myset "member_1" "member_2"
Result>	2
Command>	sismember myset "member_1"
Result>	1 exists
Command>	sismember myset "member_X"
Result>	0 does not exist

Syntax

SISMEMBER key member

Available since version 1.0.0.
Time complexity is O(1).

Related commands

Clients for Java	Jedis, Lettuce, Redisson
Clients for C	Hiredis

<< SDIFFSTORE	SISMEMBER	SMISMEMBER >>

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