Configuring Write-through Provider

To preserve the cache data in some persistent storage, you can configure Write-through providers for a cache. By using the Write-through provider, the cached data and data added/updated/removed are synchronized with a data source.

Important

For .NET, before deploying your .dll files, ensure you have the appropriate .NET Version installed as discussed in the NCache Installation Guide.

Using the NCache Management Center

• Launch the NCache Management Center by browsing to http://localhost:8251 or <server-ip>:8251 on Windows and Linux.

• In the left navigation bar, click on Clustered Caches or Local Caches, based on the cache to which the backing source will be configured. Against the cache name, click on View Details.

• Make sure that the cache is stopped.

• This opens up the detailed configuration page for the cache. Go to the Advanced Settings tab and click on Backing Source in the left bar.

• Check the Enable Write Through box. Click on Add Provider.

• A new page Add Write Thru Provider opens up. Enter the Provider Name in the text box and then click on the Browse button to browse for assembly implementing the IWriteThruProvider interface. Select the class name from the drop-down list.

• Select the required Write-through provider.

• You can also provide the values to your Write-through provider class, if required. Specify the parameter name in the Parameter field and its value under the Value field.

Note

These parameters, along with their assigned values, are passed to the selected Write-through provider when it is initialized on cache start. Providing the parameters is optional.

• Click OK.

• The selected provider class will be listed in the Write Through provider list in the Backing Source tab.

• Deploy the Write-through provider assembly along with its dependent assemblies if any. Click on the Deploy Backing Source Provider button at the bottom left of the Backing Source tab page. Browse for the required assemblies, select all of the required assemblies, and click Open.

• After applying all the changes click on Save Changes.

Using Command Line Tools

You can also use the Command Line Tools to configure Write-through, as discussed below.

Configure Write-through

The Add BackingSource cmdlet enables users to configure backing source (Write-through) providers for the specified cache This command configures Writer1 as the Write-through provider on demoCache.

• Windows
• Linux

Add-BackingSource -CacheName demoCache -AssemblyPath C:\WriteThru.dll -Class WriteThru.Writer -ProviderName MyWriter -WriteThru

Remove Write-through

The Remove BackingSource cmdlet removes the pre-configured backing source providers (Write-through) from the cache or a specified server. The following command removes the pre-configured Write-through provider named Writer1 from the demoCache existing on server 20.200.20.39.

• Windows
• Linux

Remove-BackingSource -CacheName demoCache -ProviderName Writer1 –WriteThru –Server 20.200.20.39

See Also

Read-through Provider
Write-through Provider for Write-Behind Operations
Deploy Providers
Add Test Data