When rotating, the CLI will generate a new key and prepend to the corresponding key array. Thus the old key is still valid and the service will use the new key for signing.
If you want to trim one or more out-dated private or secret key(s) from the config, use the command `db config trim <key>`. It will remove the last item (private or secret key) in the array.
You may remove the old key after a certain period (such as half a year) to allow most of your users have time to touch the new key.
If you want to remove multiple keys at once, just append a number to the command. E.g. `logto db config trim oidc.cookieKeys 3`.
Run `logto db config trim help` for detailed usage.