Co-located cache not working in web role - session

Question

My sessions are not being cached. I am using co-located caching on my web role.
I have the following in my web.config:
<configSections>
<section name="cacheDiagnostics" type="Microsoft.ApplicationServer.Caching.AzureCommon.DiagnosticsConfigurationSection, Microsoft.ApplicationServer.Caching.AzureCommon" allowLocation="true" allowDefinition="Everywhere" />
</configSections>
...
<dataCacheClients>
<dataCacheClient name="default">
<autoDiscover isEnabled="true" identifier="Website" />
</dataCacheClient>
</dataCacheClients>
My cloud service definition (.csdef) is as follows:
<ServiceDefinition name="WebCloud.Test" ...>
<WebRole name="Website" vmsize="Small">
<Sites>
<Site name="Web">
<Bindings>
<Binding name="Endpoint1" endpointName="Endpoint1" />
</Bindings>
</Site>
</Sites>
<Endpoints>
<InputEndpoint name="Endpoint1" protocol="http" port="80" />
</Endpoints>
<Imports>
<Import moduleName="Caching" />
</Imports>
<Startup priority="-2">
<Task commandLine="Microsoft.WindowsAzure.Caching\ClientPerfCountersInstaller.exe install" executionContext="elevated" taskType="simple" />
</Startup>
</WebRole>
</ServiceDefinition>
And the following in the ConfigurationSettings of the cscfg file:
<Setting name="Microsoft.WindowsAzure.Plugins.Caching.ConfigStoreConnectionString" value="DefaultEndpointsProtocol=http;AccountName=ACCOUNTNAME;AccountKey=ACCOUNTKEY==" />
<Setting name="Microsoft.WindowsAzure.Plugins.Caching.ClientDiagnosticLevel" value="1" />
<Setting name="Microsoft.WindowsAzure.Plugins.Caching.NamedCaches" value="{"caches":[{"name":"default","policy":{"eviction":{"type":0},"expiration":{"defaultTTL":10,"isExpirable":true,"type":1},"serverNotification":{"isEnabled":false}},"secondaries":0}]}" />
<Setting name="Microsoft.WindowsAzure.Plugins.Caching.DiagnosticLevel" value="1" />
<Setting name="Microsoft.WindowsAzure.Plugins.Caching.CacheSizePercentage" value="20" />
Can anyone spot why it is not working? Is it perhaps the identifier set in dataCacheClients?

Answer 1

I fixed the issue. The following needs to be included in the web.config:
<sessionState mode="Custom" customProvider="AFCacheSessionStateProvider">
<providers>
<add name="AFCacheSessionStateProvider" type="Microsoft.Web.DistributedCache.DistributedCacheSessionStateStoreProvider, Microsoft.Web.DistributedCache" cacheName="default" dataCacheClientName="default" applicationName="AFCacheSessionState"/>
</providers>
</sessionState>
This stores ASP.NET Session State in the cache.