EPiServer.Data.Cache.DefaultCacheProvider (DDS) sends unnecessary events

Description

The default provider (EPiServer.Data.Cache.DefaultCacheProvider) for DDS sends unnecessary events. Currently, when an item is removed from cache, the remote receiver of the event removes the event but also sends an additional remote event. When running with multiple instances, unnecessary events are sent.

There is a workaround: use another cache provider. This can be configured in web.config.
First, add a configuration section as:

  <section name="episerver.dataStore" type="EPiServer.Data.Configuration.EPiServerDataStoreSection, EPiServer.Framework.AspNet" />

Then, configure DDS to use another cache provider, like this:

 <episerver.dataStore>
    <dataStore>
      <cache defaultProvider="httpCacheProvider">
        <providers>
          <clear/>
          <add name="httpCacheProvider" type="EPiServer.Data.Cache.HttpRuntimeCacheProvider, EPiServer.Framework.AspNet" />
        </providers>
      </cache>
    </dataStore>
  </episerver.dataStore>