# NON_PERSISTENT

Sending a `NON_PERSISTENT` message omits the overhead of persisting the message on disk to improve performance.

If `authorization` is disabled on the server, the server does not send a confirmation to the message producer.

If `authorization` is enabled on the server, the default condition is for the producer to wait for the server to reply with a confirmation in the same manner as when using `PERSISTENT` mode.

Regardless of whether `authorization` is enabled or disabled, you can use the `npsend_check_mode` parameter in the tibemsd.conf file to specify the conditions under which the server is to send confirmation of`NON_PERSISTENT` messages to the producer. See the description for `npsend_check_mode` for details.

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