Number of applications that received the message.

Remark: This information is not available when connecting to a Redis cluster.

Name of the redisConnection variable that corresponds to the Redis server connection.

Name of the channel on which the message must be published. This string is encoded in UTF8 format.

Message to publish on the channel:

• If it is a String parameter, it will be converted to UTF8 format.
• If it is a Buffer parameter, it will be sent in binary format.