Help Center/ Distributed Cache Service/ User Guide (ME-Abu Dhabi Region)/ Service Overview/ Command Compatibility/ Command Restrictions for Cluster Instances
Updated on 2022-02-21 GMT+08:00
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Command Restrictions for Cluster Instances

Some Redis commands are supported by cluster DCS instances for multi-key operations in the same slot. For details, see Table 1.

Table 1 Redis commands restricted in cluster DCS instances.

Category

Description

Set

SINTER

Returns the members of the set resulting from the intersection of all the given sets.

SINTERSTORE

Equal to SINTER, but instead of returning the result set, it is stored in destination.

SUNION

Returns the members of the set resulting from the union of all the given sets.

SUNIONSTORE

Equal to SUNION, but instead of returning the result set, it is stored in destination.

SDIFF

Returns the members of the set resulting from the difference between the first set and all the successive sets.

SDIFFSTORE

Equal to SDIFF, but instead of returning the result set, it is stored in destination.

SMOVE

Moves member from the set at source to the set at destination.

Sorted Set

ZUNIONSTORE

Computes the union of numkeys sorted sets given by the specified keys.

ZINTERSTORE

Computes the intersection of numkeys sorted sets given by the specified keys.

HyperLogLog

PFCOUNT

Returns the approximated cardinality computed by the HyperLogLog data structure stored at the specified variable.

PFMERGE

Merges multiple HyperLogLog values into a unique value.

Keys

RENAME

Renames key to newkey.

RENAMENX

Renames key to newkey if newkey does not yet exist.

BITOP

Performs a bitwise operation between multiple keys (containing string values) and stores the result in the destination key.

RPOPLPUSH

Returns and removes the last element (tail) of the list stored at source, and pushes the element at the first element (head) of the list stored at destination.

String

MSETNX

Sets the given keys to their respective values.

While running commands that take a long time to run, such as FLUSHALL, DCS instances may not respond to other commands and may change to the faulty state. After the command finishes executing, the instance will return to normal.

Parent topic: Command Compatibility