Commands Supported and Disabled by DCS for Redis 3.0

DCS for Redis 3.0 is developed based on Redis 3.0.7 and is compatible with open-source protocols and commands.

This section describes DCS for Redis 3.0's compatibility with Redis commands, including supported commands, disabled commands, unsupported scripts and commands of later Redis versions, and restrictions on command usage. For more information about the command syntax, visit the Redis official website.

DCS Redis 3.0 instances have been taken offline at new sites, but can still be used at existing sites. DCS Redis 4.0 or 5.0 instances are recommended.

DCS for Redis instances support most Redis commands, which are listed in Commands Supported by DCS for Redis 3.0. Any client compatible with the Redis protocol can access DCS.

For security purposes, some Redis commands are disabled in DCS, as listed in Commands Disabled by DCS for Redis 3.0.
Some Redis commands are supported by cluster DCS instances for multi-key operations in the same slot. For details, see Command Restrictions.
Some Redis commands have usage restrictions, which are described in Other Command Usage Restrictions.

Commands Supported by DCS for Redis 3.0

The following lists commands supported by DCS for Redis 3.0.

Commands available since later Redis versions are not supported by earlier-version instances. Run a command on redis-cli to check whether it is supported by DCS for Redis. If the message "(error) ERR unknown command" is returned, the command is not supported.
The following commands listed in the tables are not supported by Proxy Cluster instances:
- List group: BLPOP, BRPOP, and BRPOPLRUSH
- CLIENT commands in the Server group: CLIENT KILL, CLIENT GETNAME, CLIENT LIST, CLIENT SETNAME, CLIENT PAUSE, and CLIENT REPLY.
- Server group: MONITOR
- Key group: RANDOMKE (for old Proxy Cluster instances)

**Table 1** Commands supported by DCS Redis 3.0 instances (1)
Keys	String	Hash	List	Set	Sorted Set	Server
DEL	APPEND	HDEL	BLPOP	SADD	ZADD	FLUSHALL
DUMP	BITCOUNT	HEXISTS	BRPOP	SCARD	ZCARD	FLUSHDB
EXISTS	BITOP	HGET	BRPOPLRUSH	SDIFF	ZCOUNT	DBSIZE
EXPIRE	BITPOS	HGETALL	LINDEX	SDIFFSTORE	ZINCRBY	TIME
MOVE	DECR	HINCRBY	LINSERT	SINTER	ZRANGE	INFO
PERSIST	DECRBY	HINCRBYFLOAT	LLEN	SINTERSTORE	ZRANGEBYSCORE	KEYS
PTTL	GET	HKEYS	LPOP	SISMEMBER	ZRANK	CLIENT KILL
RANDOMKEY	GETRANGE	HMGET	LPUSHX	SMEMBERS	ZREMRANGEBYRANK	CLIENT LIST
RENAME	GETSET	HMSET	LRANGE	SMOVE	ZREMRANGEBYCORE	CLIENT GETNAME
RENAMENX	INCR	HSET	LREM	SPOP	ZREVRANGE	CLIENT SETNAME
RESTORE	INCRBY	HSETNX	LSET	SRANDMEMBER	ZREVRANGEBYSCORE	CONFIG GET
SORT	INCRBYFLOAT	HVALS	LTRIM	SREM	ZREVRANK	MONITOR
TTL	MGET	HSCAN	RPOP	SUNION	ZSCORE	SLOWLOG
TYPE	MSET	-	RPOPLPU	SUNIONSTORE	ZUNIONSTORE	ROLE
SCAN	MSETNX	-	RPOPLPUSH	SSCAN	ZINTERSTORE	-
OBJECT	PSETEX	-	RPUSH	-	ZSCAN	-
-	SET	-	RPUSHX	-	ZRANGEBYLEX	-
-	SETBIT	-	-	-	-	-
-	SETEX	-	-	-	-	-
-	SETNX	-	-	-	-	-
-	SETRANGE	-	-	-	-	-
-	STRLEN	-	-	-	-	-

**Table 2** Commands supported by DCS Redis 3.0 instances (2)
HyperLoglog	Pub/Sub	Transactions	Connection	Scripting	Geo
PFADD	PSUBSCRIBE	DISCARD	AUTH	EVAL	GEOADD
PFCOUNT	PUBLISH	EXEC	ECHO	EVALSHA	GEOHASH
PFMERGE	PUBSUB	MULTI	PING	SCRIPT EXISTS	GEOPOS
-	PUNSUBSCRIBE	UNWATCH	QUIT	SCRIPT FLUSH	GEODIST
-	SUBSCRIBE	WATCH	SELECT	SCRIPT KILL	GEORADIUS
-	UNSUBSCRIBE	-	-	SCRIPT LOAD	GEORADIUSBYMEMBER

Commands Disabled by DCS for Redis 3.0

The following lists commands disabled by DCS for Redis 3.0.

**Table 3** Redis commands disabled in single-node and master/standby DCS Redis 3.0 instances
Keys	Server
MIGRATE	SLAVEOF
-	SHUTDOWN
-	LASTSAVE
-	DEBUG commands
-	COMMAND
-	SAVE
-	BGSAVE
-	BGREWRITEAOF

**Table 4** Redis commands disabled in Proxy Cluster DCS Redis 3.0 instances
Keys	Server	List	Transactions	Connection	Cluster	codis
MIGRATE	SLAVEOF	BLPOP	DISCARD	SELECT	CLUSTER	TIME
MOVE	SHUTDOWN	BRPOP	EXEC	-	-	SLOTSINFO
-	LASTSAVE	BRPOPLPUSH	MULTI	-	-	SLOTSDEL
-	DEBUG commands	-	UNWATCH	-	-	SLOTSMGRTSLOT
-	COMMAND	-	WATCH	-	-	SLOTSMGRTONE
-	SAVE	-	-	-	-	SLOTSCHECK
-	BGSAVE	-	-	-	-	SLOTSMGRTTAGSLOT
-	BGREWRITEAOF	-	-	-	-	SLOTSMGRTTAGONE
-	SYNC	-	-	-	-	-
-	PSYNC	-	-	-	-	-
-	MONITOR	-	-	-	-	-
-	CLIENT commands	-	-	-	-	-
-	OBJECT	-	-	-	-	-
-	ROLE	-	-	-	-	-