The command returns information about the current client connection's use of the server assisted client side caching feature.
Array reply: a list of tracking information sections and their respective values, specifically:
- flags: A list of tracking flags used by the connection. The flags and their meanings are as follows:
off: The connection isn't using server assisted client side caching.
on: Server assisted client side caching is enabled for the connection.
bcast: The client uses broadcasting mode.
optin: The client does not cache keys by default.
optout: The client caches keys by default.
caching-yes: The next command will cache keys (exists only together with
caching-no: The next command won't cache keys (exists only together with
noloop: The client isn't notified about keys modified by itself.
broken_redirect: The client ID used for redirection isn't valid anymore.
- redirect: The client ID used for notifications redirection, or -1 when none.
- prefixes: A list of key prefixes for which notifications are sent to the client.