CLIENT LIST

Syntax
CLIENT LIST [TYPE <NORMAL | MASTER | REPLICA | PUBSUB>]
  [ID client-id [client-id ...]]
Available since:
2.4.0
Time complexity:
O(N) where N is the number of client connections
ACL categories:
@admin, @slow, @dangerous, @connection,

The CLIENT LIST command returns information and statistics about the client connections server in a mostly human readable format.

You can use one of the optional subcommands to filter the list. The TYPE type subcommand filters the list by clients' type, where type is one of normal, master, replica, and pubsub. Note that clients blocked by the MONITOR command belong to the normal class.

The ID filter only returns entries for clients with IDs matching the client-id arguments.

Here is the meaning of the fields:

  • id: a unique 64-bit client ID
  • addr: address/port of the client
  • laddr: address/port of local address client connected to (bind address)
  • fd: file descriptor corresponding to the socket
  • name: the name set by the client with CLIENT SETNAME
  • age: total duration of the connection in seconds
  • idle: idle time of the connection in seconds
  • flags: client flags (see below)
  • db: current database ID
  • sub: number of channel subscriptions
  • psub: number of pattern matching subscriptions
  • ssub: number of shard channel subscriptions. Added in Redis 7.0.3
  • multi: number of commands in a MULTI/EXEC context
  • watch: number of keys this client is currently watching. Added in Redis 8.0
  • qbuf: query buffer length (0 means no query pending)
  • qbuf-free: free space of the query buffer (0 means the buffer is full)
  • argv-mem: incomplete arguments for the next command (already extracted from query buffer)
  • multi-mem: memory is used up by buffered multi commands. Added in Redis 7.0
  • obl: output buffer length
  • oll: output list length (replies are queued in this list when the buffer is full)
  • omem: output buffer memory usage
  • tot-mem: total memory consumed by this client in its various buffers
  • events: file descriptor events (see below)
  • cmd: last command played
  • user: the authenticated username of the client
  • redir: client id of current client tracking redirection
  • resp: client RESP protocol version. Added in Redis 7.0

The client flags can be a combination of:

A: connection to be closed ASAP
b: the client is waiting in a blocking operation
c: connection to be closed after writing entire reply
d: a watched keys has been modified - EXEC will fail
e: the client is excluded from the client eviction mechanism
i: the client is waiting for a VM I/O (deprecated)
M: the client is a master
N: no specific flag set
O: the client is a client in MONITOR mode
P: the client is a Pub/Sub subscriber
r: the client is in readonly mode against a cluster node
S: the client is a replica node connection to this instance
u: the client is unblocked
U: the client is connected via a Unix domain socket
x: the client is in a MULTI/EXEC context
t: the client enabled keys tracking in order to perform client side caching
T: the client will not touch the LRU/LFU of the keys it accesses
R: the client tracking target client is invalid
B: the client enabled broadcast tracking mode

The file descriptor events can be:

r: the client socket is readable (event loop)
w: the client socket is writable (event loop)

Notes

New fields are regularly added for debugging purpose. Some could be removed in the future. A version safe Redis client using this command should parse the output accordingly (i.e. handling gracefully missing fields, skipping unknown fields).

RESP2/RESP3 Reply

Bulk string reply: information and statistics about client connections.

History

  • Starting with Redis version 2.8.12: Added unique client id field.
  • Starting with Redis version 5.0.0: Added optional TYPE filter.
  • Starting with Redis version 6.0.0: Added user field.
  • Starting with Redis version 6.2.0: Added argv-mem, tot-mem, laddr and redir fields and the optional ID filter.
  • Starting with Redis version 7.0.0: Added resp, multi-mem, rbs and rbp fields.
  • Starting with Redis version 7.0.3: Added ssub field.
Rate this page