<% set_title(product_name, "Data Serialization (DataSerializable and DataSerializer)") %>

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<%=vars.product_name%>'s `DataSerializable` interface gives you quick serialization of your objects.

## <a id="gemfire_data_serialization__section_0C84D6BF5E9748CB865E6BB944A077DE" class="no-quick-link"></a>Data Serialization with the DataSerializable Interface

<%=vars.product_name%>'s `DataSerializable` interface gives you faster and more compact data serialization than the standard Java serialization or <%=vars.product_name%> PDX serialization. However, while <%=vars.product_name%> `DataSerializable` interface is generally more performant than <%=vars.product_name%>'s `PdxSerializable`, it requires full deserialization on the server and then reserialization to send the data back to the client.

You can further speed serialization by registering the instantiator for your `DataSerializable` class through `Instantiator`, eliminating the need for reflection to find the right serializer. You can provide your own serialization through the API.

The recommended way to register your custom `Instantiator` is by specifying it in the `serialization-registration` element of cache.xml.

For more information, see the online Java documentation for `DataSerializable` and `DataSerializer`.

**Example cache.xml:**

The following provides an example of how to register an instantiator using cache.xml.

``` pre
<serialization-registration>
<instantiator id="30">
   <class-name>com.package.MyClass</class-name>
</instantiator>
</serialization-registration>
```

In addition to speeding standard object serialization, you can use the `DataSerializable` interface to serialize any custom objects you store in the cache.

## <a id="gemfire_data_serialization__section_B21408E7090C41B08BF300146F87648B" class="no-quick-link"></a>Serializing Your Domain Object with DataSerializer

You can also use `DataSerializer` to serialize domain objects. It serializes data in the same way as `DataSerializable` but allows you to serialize classes without modifying the domain class code.

See the JavaDocs on [DataSerializable](<%=vars.javadocs%>/org/apache/geode/DataSerializable.html) and [DataSerializer](<%=vars.javadocs%>/org/apache/geode/DataSerializer.html) for more information.