A scalable cluster system that provides scalable services for client applications is provided with client affinity. The scalable services are transparent to the client application. To facilitate this transparent scalability, the system provides different types of client affinity to different services...http://www.google.de/patents/US6587866?utm_source=gb-gplus-sharePatent US6587866 - Method for distributing packets to server nodes using network client affinity and packet distribution table
