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

BITCOUNT

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

Count bits that are 1

Usage is bitcount key start end.
start and end are byte offsets starting from 0.
Negative values can be used for start or end. In that case the last byte is -1, the previous one is -2, and so on.

Example

Command>	set key ABC
Result>	OK
Command>	bitcount key
Result>	7
Command>	bitcount key 1 2
Result>	5

Syntax

BITCOUNT key [start end]

Available since version 2.6.0.
Time complexity is O(N).

Related commands

SETBIT, GETBIT, BITOP, BITPOS

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

<< BITOP	BITCOUNT	BITFIELD >>

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