redis · dwdougherty · Jan 7, 2026 · Jan 12, 2026
diff --git a/content/commands/bitop.md b/content/commands/bitop.md
@@ -82,6 +82,11 @@ summary: Performs bitwise operations on multiple strings, and stores the result.
 syntax_fmt: BITOP <AND | OR | XOR | NOT | DIFF | DIFF1 | ANDOR | ONE> destkey key [key ...]
 title: BITOP
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Perform a bitwise operation between multiple keys (containing string values) and
 store the result in the destination key.
 

diff --git a/content/commands/blmove.md b/content/commands/blmove.md
@@ -94,6 +94,11 @@ summary: Pops an element from a list, pushes it to another list and returns it.
 syntax_fmt: BLMOVE source destination <LEFT | RIGHT> <LEFT | RIGHT> timeout
 title: BLMOVE
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 `BLMOVE` is the blocking variant of [`LMOVE`]({{< relref "/commands/lmove" >}}).
 When `source` contains elements, this command behaves exactly like [`LMOVE`]({{< relref "/commands/lmove" >}}).
 When used inside a [`MULTI`]({{< relref "/commands/multi" >}})/[`EXEC`]({{< relref "/commands/exec" >}}) block or a Lua script, this command behaves exactly like [`LMOVE`]({{< relref "/commands/lmove" >}}).

diff --git a/content/commands/blmpop.md b/content/commands/blmpop.md
@@ -75,6 +75,11 @@ summary: Pops the first element from one of multiple lists. Blocks until an elem
 syntax_fmt: "BLMPOP timeout numkeys key [key ...] <LEFT | RIGHT> [COUNT\_count]"
 title: BLMPOP
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 `BLMPOP` is the blocking variant of [`LMPOP`]({{< relref "/commands/lmpop" >}}).
 
 When any of the lists contains elements, this command behaves exactly like [`LMPOP`]({{< relref "/commands/lmpop" >}}).

diff --git a/content/commands/blpop.md b/content/commands/blpop.md
@@ -57,6 +57,11 @@ summary: Removes and returns the first element in a list. Blocks until an elemen
 syntax_fmt: BLPOP key [key ...] timeout
 title: BLPOP
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 `BLPOP` is a blocking list pop primitive.
 It is the blocking version of [`LPOP`]({{< relref "/commands/lpop" >}}) because it blocks the connection when there
 are no elements to pop from any of the given lists.

diff --git a/content/commands/brpop.md b/content/commands/brpop.md
@@ -57,6 +57,11 @@ summary: Removes and returns the last element in a list. Blocks until an element
 syntax_fmt: BRPOP key [key ...] timeout
 title: BRPOP
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 `BRPOP` is a blocking list pop primitive.
 It is the blocking version of [`RPOP`]({{< relref "/commands/rpop" >}}) because it blocks the connection when there
 are no elements to pop from any of the given lists.

diff --git a/content/commands/brpoplpush.md b/content/commands/brpoplpush.md
@@ -79,6 +79,11 @@ summary: Pops an element from a list, pushes it to another list and returns it.
 syntax_fmt: BRPOPLPUSH source destination timeout
 title: BRPOPLPUSH
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 `BRPOPLPUSH` is the blocking variant of [`RPOPLPUSH`]({{< relref "/commands/rpoplpush" >}}).
 When `source` contains elements, this command behaves exactly like [`RPOPLPUSH`]({{< relref "/commands/rpoplpush" >}}).
 When used inside a [`MULTI`]({{< relref "/commands/multi" >}})/[`EXEC`]({{< relref "/commands/exec" >}}) block or a Lua script, this command behaves exactly like [`RPOPLPUSH`]({{< relref "/commands/rpoplpush" >}}).

diff --git a/content/commands/bzmpop.md b/content/commands/bzmpop.md
@@ -77,6 +77,11 @@ summary: Removes and returns a member by score from one or more sorted sets. Blo
 syntax_fmt: "BZMPOP timeout numkeys key [key ...] <MIN | MAX> [COUNT\_count]"
 title: BZMPOP
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 `BZMPOP` is the blocking variant of [`ZMPOP`]({{< relref "/commands/zmpop" >}}).
 
 When any of the sorted sets contains elements, this command behaves exactly like [`ZMPOP`]({{< relref "/commands/zmpop" >}}).

diff --git a/content/commands/bzpopmax.md b/content/commands/bzpopmax.md
@@ -60,6 +60,11 @@ summary: Removes and returns the member with the highest score from one or more
 syntax_fmt: BZPOPMAX key [key ...] timeout
 title: BZPOPMAX
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 `BZPOPMAX` is the blocking variant of the sorted set [`ZPOPMAX`]({{< relref "/commands/zpopmax" >}}) primitive.
 
 It is the blocking version because it blocks the connection when there are no

diff --git a/content/commands/bzpopmin.md b/content/commands/bzpopmin.md
@@ -60,6 +60,11 @@ summary: Removes and returns the member with the lowest score from one or more s
 syntax_fmt: BZPOPMIN key [key ...] timeout
 title: BZPOPMIN
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 `BZPOPMIN` is the blocking variant of the sorted set [`ZPOPMIN`]({{< relref "/commands/zpopmin" >}}) primitive.
 
 It is the blocking version because it blocks the connection when there are no

diff --git a/content/commands/cms.merge.md b/content/commands/cms.merge.md
@@ -44,6 +44,11 @@ syntax_fmt: "CMS.MERGE destination numKeys source [source ...] [WEIGHTS weight\n
   \ [weight ...]]"
 title: CMS.MERGE
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Merges several sketches into one sketch. All sketches must have identical width and depth. Weights can be used to multiply certain sketches. Default weight is 1. 
 
 ### Parameters:

diff --git a/content/commands/copy.md b/content/commands/copy.md
@@ -73,6 +73,11 @@ summary: Copies the value of a key to a new key.
 syntax_fmt: "COPY source destination [DB\_destination-db] [REPLACE]"
 title: COPY
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 This command copies the value stored at the `source` key to the `destination`
 key.
 

diff --git a/content/commands/dbsize.md b/content/commands/dbsize.md
@@ -31,6 +31,11 @@ summary: Returns the number of keys in the database.
 syntax_fmt: DBSIZE
 title: DBSIZE
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Return the number of keys in the currently-selected database.
 
 ## Redis Enterprise and Redis Cloud compatibility

diff --git a/content/commands/del.md b/content/commands/del.md
@@ -52,6 +52,11 @@ summary: Deletes one or more keys.
 syntax_fmt: DEL key [key ...]
 title: DEL
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Removes the specified keys.
 A key is ignored if it does not exist.
 

diff --git a/content/commands/eval.md b/content/commands/eval.md
@@ -63,6 +63,11 @@ summary: Executes a server-side Lua script.
 syntax_fmt: EVAL script numkeys [key [key ...]] [arg [arg ...]]
 title: EVAL
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Invoke the execution of a server-side Lua script.
 
 The first argument is the script's source code.

diff --git a/content/commands/evalsha.md b/content/commands/evalsha.md
@@ -62,6 +62,11 @@ summary: Executes a server-side Lua script by SHA1 digest.
 syntax_fmt: EVALSHA sha1 numkeys [key [key ...]] [arg [arg ...]]
 title: EVALSHA
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Evaluate a script from the server's cache by its SHA1 digest.
 
 The server caches scripts by using the [`SCRIPT LOAD`]({{< relref "/commands/script-load" >}}) command.

diff --git a/content/commands/exec.md b/content/commands/exec.md
@@ -29,6 +29,11 @@ summary: Executes all commands in a transaction.
 syntax_fmt: EXEC
 title: EXEC
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Executes all previously queued commands in a [transaction][tt] and restores the
 connection state to normal.
 

diff --git a/content/commands/exists.md b/content/commands/exists.md
@@ -52,6 +52,11 @@ summary: Determines whether one or more keys exist.
 syntax_fmt: EXISTS key [key ...]
 title: EXISTS
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Returns if `key` exists.
 
 The user should be aware that if the same existing key is mentioned in the arguments multiple times, it will be counted multiple times. So if `somekey` exists, `EXISTS somekey somekey` will return 2.

diff --git a/content/commands/flushall.md b/content/commands/flushall.md
@@ -51,6 +51,11 @@ summary: Removes all keys from all databases.
 syntax_fmt: FLUSHALL [ASYNC | SYNC]
 title: FLUSHALL
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Delete all the keys of all the existing databases, not just the currently selected one.
 This command never fails.
 

diff --git a/content/commands/flushdb.md b/content/commands/flushdb.md
@@ -51,6 +51,11 @@ summary: Remove all keys from the current database.
 syntax_fmt: FLUSHDB [ASYNC | SYNC]
 title: FLUSHDB
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Delete all the keys of the currently selected DB.
 This command never fails.
 

diff --git a/content/commands/georadius.md b/content/commands/georadius.md
@@ -171,6 +171,11 @@ syntax_fmt: "GEORADIUS key longitude latitude radius <M | KM | FT | MI>\n  [WITH
   key]"
 title: GEORADIUS
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Return the members of a sorted set populated with geospatial information using [`GEOADD`]({{< relref "/commands/geoadd" >}}), which are within the borders of the area specified with the center location and the maximum distance from the center (the radius).
 
 This manual page also covers the [`GEORADIUS_RO`]({{< relref "/commands/georadius_ro" >}}) and [`GEORADIUSBYMEMBER_RO`]({{< relref "/commands/georadiusbymember_ro" >}}) variants (see the section below for more information).

diff --git a/content/commands/georadiusbymember.md b/content/commands/georadiusbymember.md
@@ -168,6 +168,11 @@ syntax_fmt: "GEORADIUSBYMEMBER key member radius <M | KM | FT | MI> [WITHCOORD]\
   key]"
 title: GEORADIUSBYMEMBER
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 This command is exactly like [`GEORADIUS`]({{< relref "/commands/georadius" >}}) with the sole difference that instead
 of taking, as the center of the area to query, a longitude and latitude value, it takes the name of a member already existing inside the geospatial index represented by the sorted set.
 

diff --git a/content/commands/geosearchstore.md b/content/commands/geosearchstore.md
@@ -176,6 +176,11 @@ syntax_fmt: "GEOSEARCHSTORE destination source <FROMMEMBER\_member |\n  FROMLONL
   \ <M | KM | FT | MI>> [ASC | DESC] [COUNT\_count\n  [ANY]] [STOREDIST]"
 title: GEOSEARCHSTORE
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 This command is like [`GEOSEARCH`]({{< relref "/commands/geosearch" >}}), but stores the result in destination key.
 
 This command replaces the now deprecated [`GEORADIUS`]({{< relref "/commands/georadius" >}}) and [`GEORADIUSBYMEMBER`]({{< relref "/commands/georadiusbymember" >}}).

diff --git a/content/commands/json.mget.md b/content/commands/json.mget.md
@@ -34,6 +34,11 @@ summary: Returns the values at a path from one or more keys
 syntax_fmt: JSON.MGET key [key ...] path
 title: JSON.MGET
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Return the values at `path` from multiple `key` arguments
 
 {{% warning %}}

diff --git a/content/commands/json.mset.md b/content/commands/json.mset.md
@@ -41,6 +41,11 @@ summary: Sets or updates the JSON value of one or more keys
 syntax_fmt: JSON.MSET key path value [key path value ...]
 title: JSON.MSET
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Set or update one or more JSON values according to the specified `key`-`path`-`value` triplets
 
 `JSON.MSET` is atomic, hence, all given additions or updates are either applied or not. It is not possible for clients to see that some of the keys were updated while others are unchanged.

diff --git a/content/commands/keys.md b/content/commands/keys.md
@@ -36,6 +36,11 @@ summary: Returns all key names that match a pattern.
 syntax_fmt: KEYS pattern
 title: KEYS
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Returns all keys matching `pattern`.
 
 While the time complexity for this operation is O(N), the constant times are

diff --git a/content/commands/lmove.md b/content/commands/lmove.md
@@ -87,6 +87,11 @@ summary: Returns an element after popping it from one list and pushing it to ano
 syntax_fmt: LMOVE source destination <LEFT | RIGHT> <LEFT | RIGHT>
 title: LMOVE
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Atomically returns and removes the first/last element (head/tail depending on
 the `wherefrom` argument) of the list stored at `source`, and pushes the
 element at the first/last element (head/tail depending on the `whereto`

diff --git a/content/commands/lmpop.md b/content/commands/lmpop.md
@@ -70,6 +70,11 @@ summary: Returns multiple elements from a list after removing them. Deletes the
 syntax_fmt: "LMPOP numkeys key [key ...] <LEFT | RIGHT> [COUNT\_count]"
 title: LMPOP
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Pops one or more elements from the first non-empty list key from the list of provided key names.
 
 `LMPOP` and [`BLMPOP`]({{< relref "/commands/blmpop" >}}) are similar to the following, more limited, commands:

diff --git a/content/commands/mget.md b/content/commands/mget.md
@@ -49,6 +49,10 @@ summary: Atomically returns the string values of one or more keys.
 syntax_fmt: MGET key [key ...]
 title: MGET
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
 Returns the values of all specified keys.
 For every key that does not hold a string value or does not exist, the special
 value `nil` is returned.

diff --git a/content/commands/mset.md b/content/commands/mset.md
@@ -56,6 +56,11 @@ summary: Atomically creates or modifies the string values of one or more keys.
 syntax_fmt: MSET key value [key value ...]
 title: MSET
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Sets the given keys to their respective values.
 `MSET` replaces existing values with new values, just as regular [`SET`]({{< relref "/commands/set" >}}).
 See [`MSETNX`]({{< relref "/commands/msetnx" >}}) if you don't want to overwrite existing values.

diff --git a/content/commands/msetnx.md b/content/commands/msetnx.md
@@ -55,6 +55,11 @@ summary: Atomically modifies the string values of one or more keys only when all
 syntax_fmt: MSETNX key value [key value ...]
 title: MSETNX
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Sets the given keys to their respective values.
 `MSETNX` will not perform any operation at all even if just a single key already
 exists.

diff --git a/content/commands/multi.md b/content/commands/multi.md
@@ -30,6 +30,11 @@ summary: Starts a transaction.
 syntax_fmt: MULTI
 title: MULTI
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Marks the start of a [transaction][tt] block.
 Subsequent commands will be queued for atomic execution using [`EXEC`]({{< relref "/commands/exec" >}}).
 

diff --git a/content/commands/pfcount.md b/content/commands/pfcount.md
@@ -95,6 +95,11 @@ this command are semantically different and have different performances.
 
 HyperLogLog representation
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 
 Redis HyperLogLogs are represented using a double representation: the *sparse* representation suitable for HLLs counting a small number of elements (resulting in a small number of registers set to non-zero value), and a *dense* representation suitable for higher cardinalities. Redis automatically switches from the sparse to the dense representation when needed.
 

diff --git a/content/commands/pfmerge.md b/content/commands/pfmerge.md
@@ -65,6 +65,11 @@ summary: Merges one or more HyperLogLog values into a single key.
 syntax_fmt: PFMERGE destkey [sourcekey [sourcekey ...]]
 title: PFMERGE
 ---
+{{< note >}}
+This command's behavior varies in clustered Redis environments. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information.
+{{< /note >}}
+
+
 Merge multiple HyperLogLog values into a unique value that will approximate
 the cardinality of the union of the observed Sets of the source HyperLogLog
 structures.