# UDP commands

The page describes the UDP commands supported by Transformer’s administration UDP interface.

To activate the UDP interface, see [UDP configuration](transformer-udp-configuration.md).

To send UDP commands to Transformer, see [Sending UDP commands to Transformer](transformer-sending-udp-commands-to-transformer.md).

## memory_write

Instructs Transformer to write its object cache to disk (to the file specified by the configuration item [memory-file](transformer-memory-and-cache-configuration.md#memory-file)).

**📌 NOTE**\
You can also instruct Transformer to write its object cache to disk by running the "Write cache to disk" operation under the `transformer.server.transformer` MBean in the [Caplin Management Console](../cmc/index.md).

**Syntax**: `memory_write`

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**See also**:

* [Sending UDP commands to Transformer](transformer-sending-udp-commands-to-transformer.md)
* [UDP configuration](transformer-udp-configuration.md)