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The command returns information about the current client connection's use of the
[server assisted client side caching](/topics/client-side-caching) feature.

@return

@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
    `optin`).
  - `caching-no`: The next command won't cache keys (exists only together with
    `optout`).
  - `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.