Abstract: A real-time customer relation management system is disclosed. The system can provide increased availability, reduced internal latencies, and reduced data processing and transfer. The system can provide real time processing and batch processing. The system architecture can have an in-memory write-through cache. The cache can store data that would have otherwise been sent to a database. The system can have a backup in-memory write-through cache. The system can use a warm standby, for example, to enhance data backup efficiency.

Abstract: Methods and architectures for implementing a scalable multi-database event processing system are provided. In one embodiment, selected account data is aggregated for all subscribers (aggregated subscriber-specific data) and a copy included on each database. In one embodiment, selected data that is not subscriber specific and that may apply to many accounts (“global data”) is also maintained and copied to each database. The global data preferably includes business data that is frequently required during operation of the system, such as pricing data. A transaction that requires business data and access to an account is processed using the copy of the business data that is on the database on which the account is located. In an embodiment, the aggregated subscriber-specific data is used in performing searches.