---
acl_categories:
- '@pubsub'
- '@fast'
arguments:
- display_text: channel
  name: channel
  type: string
- display_text: message
  name: message
  type: string
arity: 3
categories:
- docs
- develop
- stack
- oss
- rs
- rc
- oss
- kubernetes
- clients
command_flags:
- pubsub
- loading
- stale
- fast
complexity: O(N+M) where N is the number of clients subscribed to the receiving channel
  and M is the total number of subscribed patterns (by any client).
description: Posts a message to a channel.
group: pubsub
hidden: false
linkTitle: PUBLISH
railroad_diagram: /images/railroad/publish.svg
since: 2.0.0
summary: Posts a message to a channel.
syntax_fmt: PUBLISH channel message
title: PUBLISH
---
Posts a message to the given channel.

In a Redis Cluster clients can publish to every node. The cluster makes sure
that published messages are forwarded as needed, so clients can subscribe to any
channel by connecting to any one of the nodes.

## Redis Software and Redis Cloud compatibility

| Redis<br />Software | Redis<br />Cloud | <span style="min-width: 9em; display: table-cell">Notes</span> |
|:----------------------|:-----------------|:------|
| <span title="Supported">&#x2705; Standard</span><br /><span title="Supported"><nobr>&#x2705; Active-Active</nobr></span> | <span title="Supported">&#x2705; Standard</span><br /><span title="Supported"><nobr>&#x2705; Active-Active</nobr></span> |  |

## Return information

{{< multitabs id="publish-return-info" 
    tab1="RESP2" 
    tab2="RESP3" >}}

[Integer reply](../../develop/reference/protocol-spec#integers): the number of clients that the message was sent to. Note that in a Redis Cluster, only clients that are connected to the same node as the publishing client are included in the count.

-tab-sep-

[Integer reply](../../develop/reference/protocol-spec#integers): the number of clients that the message was sent to. Note that in a Redis Cluster, only clients that are connected to the same node as the publishing client are included in the count.

{{< /multitabs >}}