You have the following options to configure through the application’s configuration file:

The \<episerver.dataStore> element has one child element called \<dataStore>.

• The \<dataStore> element has the child elements \<providers> and \<cache> and the following attributes:

  • `defaultProvider` is the name of the Dynamic Data Store provider to use. The name should correspond to an element with the same name in the <providers> element.

  • `autoResolveType` can be true (default) or false. If set to true then the Dynamic Data Store tries to resolve .NET Types if the `System.Type.GetType` method call fails for types stored in a store. The resolution is done by first removing the version information from the type string and calling `Type.GetType` again. If this fails, then the assembly information is removed from the type string and `Type.GetType` is called again. If the Type still is not resolved, an exception is thrown. If this value is set to false, type resolving is done through assembly redirects in the configuration file.

  • `autoRemapStores` can be true (default) or false. If this is set to true, then the Dynamic Data Store automatically remaps all .NET classes decorated with the `EPiServerDataStoreAttribute` attribute and where the `AutomaticallyRemapStore` property is set to true, to their respective stores when the Class and store mappings are no longer aligned. If this value is set to false, no automatic remapping is done for any class.

• The <providers> elements contains a child \<add> elements for each Dynamic Data Store provider available. Currently, only a providers for Microsoft SQL Server is available.

• The \<cache> element contains a single <providers> child element and the following attributes:

  • `defaultProvider` is the name of the Dynamic Data Store cache provider to use. The name should correspond to an element with the same name in the \<cache> \<providers> element.

• The \<cache> \<providers> elements contain a child <add> elements for each Dynamic Data Store cache provider available. Currently, providers are available for HTTP Runtime and Null (no caching).

## Change configuration programmatically

You also can modify some of the Dynamic Data Store configuration programmatically through the `EPiServer.Data.Dynamic.DynamicDataStoreOptions` class. This should be done during the configuration phase of the site initialization. This can be done by creating an initialization module that implements the `IConfigurableModule` interface and modify the options in the `ConfigureContainer` method.

## Recommendations

• Create/obtain instances of the `DynamicDataStore` on the stack, use them and then discard them.

  📘

  Note

  Dynamic Data Store **is not** thread safe and if an instance is used and shared between multiple threads, it should be protected with thread-locking techniques.

• Implement `EPiServer.Data.IDynamicData` or a `Guid` property called Id on your objects to be saved when you want to control the external identity of your objects.

• Use the same instance of a Dynamic Data Store to load and then update a POCO object (object without identity).

See also: [episerver.datastore](🔗)