We are currently using 4.0 version of Lightstreamer and have a similar problem with how to handle failover of Data Adapters to prevent stale data that may have been deleted when the Data Adapter was down. You mentioned in your reply that "Lightstreamer Server 4.0 (not available soon) will feature complete item status management, with the possibility of marking individual items as stale and letting the system handle coherency". Could you provide more details on what is meant by this feature and provide references to applicable documentation or examples. By the way, we are using the .NET version of Lightstreamer with a client application.

Thanks in advance for the support.