Commands Supported and Disabled by DCS for Redis 4.0

DCS for Redis 4.0 is developed based on Redis 4.0.14 and is compatible with open-source protocols and commands. This section describes DCS for Redis 4.0's compatibility with Redis commands, including supported and disabled commands.

DCS Redis instances support most Redis commands. 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 4.0.
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 (such as KEYS, FLUSHDB, and FLUSHALL) have usage restrictions, which are described in Other Command Usage Restrictions.
Some high-risk commands can be renamed. For details, see Commands That Can Be Renamed.

Commands Supported by DCS for Redis 4.0

Table 1 and Table 2 list commands supported by single-node, master/standby, and Redis Cluster DCS Redis 4.0 instances.
Table 3 and Table 4 list the Redis commands supported by Proxy Cluster DCS Redis 4.0 instances.

Table 5 and Table 6 list the Redis commands supported by read/write splitting DCS Redis 4.0 instances.

For details about the command syntax, visit the Redis official website. For example, to view details about the SCAN command, enter SCAN in the search box on this page.

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.
For DCS Redis 4.0 instances in the Redis Cluster mode, ensure that all commands in a pipeline are executed on the same shard.

**Table 1** Commands supported by single-node, master/standby, and Redis Cluster DCS Redis 4.0 instances (1)
Generic (Key)	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	CLIENT KILL
PTTL	GET	HKEYS	LPOP	SISMEMBER	ZRANK	CLIENT LIST
RANDOMKEY	GETRANGE	HMGET	LPUSHX	SMEMBERS	ZREMRANGEBYRANK	CLIENT GETNAME
RENAME	GETSET	HMSET	LRANGE	SMOVE	ZREMRANGEBYCORE	CLIENT SETNAME
RENAMENX	INCR	HSET	LREM	SPOP	ZREVRANGE	CONFIG GET
RESTORE	INCRBY	HSETNX	LSET	SRANDMEMBER	ZREVRANGEBYSCORE	MONITOR
SORT	INCRBYFLOAT	HVALS	LTRIM	SREM	ZREVRANK	SLOWLOG
TTL	MGET	HSCAN	RPOP	SUNION	ZSCORE	ROLE
TYPE	MSET	HSTRLEN	RPOPLPU	SUNIONSTORE	ZUNIONSTORE	SWAPDB
SCAN	MSETNX	HLEN	RPOPLPUSH	SSCAN	ZINTERSTORE	MEMORY
OBJECT	PSETEX	-	RPUSH	-	ZSCAN	CONFIG
PEXPIRE	SET	-	RPUSHX	-	ZRANGEBYLEX	-
PEXPIREAT	SETBIT	-	LPUSH	-	ZLEXCOUNT	-
KEYS	SETEX	-	-	-	ZREMRANGEBYSCORE	-
-	SETNX	-	-	-	ZREM	-
-	SETRANGE	-	-	-	-	-
-	STRLEN	-	-	-	-	-
-	BITFIELD	-	-	-	-	-

**Table 2** Commands supported by single-node, master/standby, and Redis Cluster DCS Redis 4.0 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 (not supported by Redis Cluster instances)	SCRIPT KILL	GEORADIUS
-	UNSUBSCRIBE	-	-	SCRIPT LOAD	GEORADIUSBYMEMBER

**Table 3** Commands supported by Proxy Cluster DCS Redis 4.0 instances (1)
Generic (Key)	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	ROLE
PTTL	GET	HKEYS	LPOP	SISMEMBER	ZRANK	MEMORY
RENAME	GETRANGE	HMGET	LPUSHX	SMEMBERS	ZREMRANGEBYRANK	COMMAND
RENAMENX	GETSET	HMSET	LRANGE	SMOVE	ZREMRANGEBYCORE	COMMAND COUNT
RESTORE	INCR	HSET	LREM	SPOP	ZREVRANGE	COMMAND GETKEYS
SORT	INCRBY	HSETNX	LSET	SRANDMEMBER	ZREVRANGEBYSCORE	COMMAND INFO
TTL	INCRBYFLOAT	HVALS	LTRIM	SREM	ZREVRANK	CONFIG GET
TYPE	MGET	HSCAN	RPOP	SUNION	ZSCORE	CONFIG RESETSTAT
SCAN	MSET	HSTRLEN	RPOPLPUSH	SUNIONSTORE	ZUNIONSTORE	CONFIG REWRITE
OBJECT	MSETNX	HLEN	RPUSH	SSCAN	ZINTERSTORE	CONFIG SET
PEXPIRE	PSETEX	HKEYS	RPUSHX	-	ZSCAN	-
PEXPIREAT	SET	-	LPUSH	-	ZRANGEBYLEX	-
EXPIREAT	SETBIT	-	-	-	ZLEXCOUNT	-
KEYS	SETEX	-	-	-	ZREMRANGEBYSCORE	-
TOUCH	SETNX	-	-	-	ZREM	-
UNLINK	SETRANGE	-	-	-	ZREMRANGEBYLEX	-
-	STRLEN	-	-	-	ZREVRANGEBYLEX	-
-	BITFIELD	-	-	-	-	-
-	GETBIT	-	-	-	-	-

**Table 4** Commands supported by Proxy Cluster DCS Redis 4.0 instances (2)
HyperLogLog	Pub/Sub	Transactions	Connection	Scripting	Geo	Cluster
PFADD	PSUBSCRIBE	DISCARD	AUTH	EVAL	GEOADD	CLUSTER INFO
PFCOUNT	PUBLISH	EXEC	ECHO	EVALSHA	GEOHASH	CLUSTER NODES
PFMERGE	PUBSUB	MULTI	PING	SCRIPT EXISTS	GEOPOS	CLUSTER SLOTS
-	PUNSUBSCRIBE	UNWATCH	QUIT	SCRIPT FLUSH	GEODIST	CLUSTER ADDSLOTS
-	SUBSCRIBE	WATCH	SELECT	SCRIPT KILL	GEORADIUS	ASKING
-	UNSUBSCRIBE	-	CLIENT KILL	SCRIPT LOAD	GEORADIUSBYMEMBER	READONLY
-	-	-	CLIENT LIST	SCRIPT DEBUG YES\|SYNC\|NO	GEOSEARCH	READWRITE
-	-	-	CLIENT GETNAME	-	GEOSEARCHSTORE	-
-	-	-	CLIENT SETNAME	-	-	-

Cluster commands in the preceding table are supported only by Proxy Cluster instances created on or after September 1, 2022.

**Table 5** Commands supported by read/write splitting DCS Redis 4.0 instances (1)
Generic (Key)	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	MONITOR
PTTL	GET	HKEYS	LPOP	SISMEMBER	ZRANK	SLOWLOG
RANDOMKEY	GETRANGE	HMGET	LPUSHX	SMEMBERS	ZREMRANGEBYRANK	ROLE
RENAME	GETSET	HMSET	LRANGE	SMOVE	ZREMRANGEBYCORE	SWAPDB
RENAMENX	INCR	HSET	LREM	SPOP	ZREVRANGE	MEMORY
RESTORE	INCRBY	HSETNX	LSET	SRANDMEMBER	ZREVRANGEBYSCORE	COMMAND
SORT	INCRBYFLOAT	HVALS	LTRIM	SREM	ZREVRANK	COMMAND COUNT
TTL	MGET	HSCAN	RPOP	SUNION	ZSCORE	COMMAND GETKEYS
TYPE	MSET	HSTRLEN	RPOPLPUSH	SUNIONSTORE	ZUNIONSTORE	COMMAND INFO
SCAN	MSETNX	HLEN	RPUSH	SSCAN	ZINTERSTORE	CONFIG GET
OBJECT	PSETEX	-	RPUSHX	-	ZSCAN	CONFIG RESETSTAT
PEXPIRE	SET	-	LPUSH	-	ZRANGEBYLEX	CONFIG REWRITE
PEXPIREAT	SETBIT	-	-	-	ZLEXCOUNT	CONFIG SET
EXPIREAT	SETEX	-	-	-	ZREMRANGEBYSCORE	-
KEYS	SETNX	-	-	-	ZREM	-
TOUCH	SETRANGE	-	-	-	ZREMRANGEBYLEX	-
UNLINK	STRLEN	-	-	-	ZREVRANGEBYLEX	-
-	BITFIELD	-	-	-	-	-
-	GETBIT	-	-	-	-	-

**Table 6** Commands supported by read/write splitting DCS Redis 4.0 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	-	CLIENT KILL	SCRIPT LOAD	GEORADIUSBYMEMBER
-	-	-	CLIENT LIST	SCRIPT DEBUG YES\|SYNC\|NO	GEOSEARCH
-	-	-	CLIENT GETNAME	-	GEOSEARCHSTORE
-	-	-	CLIENT SETNAME	-	-

Commands Disabled by DCS for Redis 4.0

The following lists commands disabled by DCS for Redis 4.0.

**Table 7** Redis commands disabled in single-node and master/standby Redis 4.0 instances
Generic (Key)	Server
MIGRATE	SLAVEOF
-	SHUTDOWN
-	LASTSAVE
-	DEBUG commands
-	COMMAND
-	SAVE
-	BGSAVE
-	BGREWRITEAOF
-	SYNC
-	PSYNC

**Table 8** Redis commands disabled in Proxy Cluster DCS Redis 4.0 instances
Generic (Key)	Server	Sorted Set	Cluster
MIGRATE	BGREWRITEAOF	BZPOPMAX	READONLY
MOVE	BGSAVE	BZPOPMIN	READWRITE
RANDOMKEY	CLIENT commands	ZPOPMAX	-
WAIT	DEBUG OBJECT	ZPOPMIN	-
-	DEBUG SEGFAULT	-	-
-	LASTSAVE	-	-
-	PSYNC	-	-
-	SAVE	-	-
-	SHUTDOWN	-	-
-	SLAVEOF	-	-
-	LATENCY commands	-	-
-	MODULE commands	-	-
-	LOLWUT	-	-
-	SWAPDB	-	-
-	REPLICAOF	-	-
-	SYNC	-	-

**Table 9** Redis commands disabled in Redis Cluster DCS Redis 4.0 instances
Generic (Key)	Server	Cluster
MIGRATE	SLAVEOF	CLUSTER MEET
-	SHUTDOWN	CLUSTER FLUSHSLOTS
-	LASTSAVE	CLUSTER ADDSLOTS
-	DEBUG commands	CLUSTER DELSLOTS
-	COMMAND	CLUSTER SETSLOT
-	SAVE	CLUSTER BUMPEPOCH
-	BGSAVE	CLUSTER SAVECONFIG
-	BGREWRITEAOF	CLUSTER FORGET
-	SYNC	CLUSTER REPLICATE
-	PSYNC	CLUSTER COUNT-FAILURE-REPORTS
-	-	CLUSTER FAILOVER
-	-	CLUSTER SET-CONFIG-EPOCH
-	-	CLUSTER RESET

**Table 10** Redis commands disabled in read/write splitting DCS Redis 4.0 instances
Generic (Key)	Generic	Server	Sorted Set
READONLY	MIGRATE	BGREWRITEAOF	BZPOPMAX
READWRITE	WAIT	BGSAVE	BZPOPMIN
-	-	DEBUG OBJECT	ZPOPMAX
-	-	DEBUG SEGFAULT	ZPOPMIN
-	-	LASTSAVE	-
-	-	LOLWUT	-
-	-	MODULE LIST/LOAD/UNLOAD	-
-	-	PSYNC	-
-	-	REPLICAOF	-
-	-	SAVE	-
-	-	SHUTDOWN [NOSAVE\|SAVE]	-
-	-	SLAVEOF	-
-	-	SWAPDB	-
-	-	SYNC	-