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

HSETNX

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

Set only if the field does not already exist

The usage is hsetnx key field value.
If the same field already exists, it is not stored.

Example

Command>	hsetnx user-1 email help@redisgate.com
Result>	0
Command>	hsetnx user-1 email2 help@redisgate.com
Result>	1

Syntax

HSETNX key field value

Available since version 2.0.0.
Time complexity is O(1).

Related commands

HMSET, HDEL, SET, LPUSH, SADD, ZSET

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

<< HEXISTS	HSETNX	HSCAN >>

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