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The `CLIENT SETNAME` command assigns a name to the current connection.
The assigned name is displayed in the output of `CLIENT LIST` so that it is
possible to identify the client that performed a given connection.
For instance when Redis is used in order to implement a queue, producers and
consumers of messages may want to set the name of the connection according to
their role.
There is no limit to the length of the name that can be assigned if not the
usual limits of the Redis string type (512 MB). However it is not possible to
use spaces in the connection name as this would violate the format of the
`CLIENT LIST` reply.
It is possible to entirely remove the connection name setting it to the empty
string, that is not a valid connection name since it serves to this specific
purpose.
The connection name can be inspected using `CLIENT GETNAME`.
Every new connection starts without an assigned name.
Tip: setting names to connections is a good way to debug connection leaks due to
bugs in the application using Redis.
@return
@simple-string-reply: `OK` if the connection name was successfully set.
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