Large Scale Multimedia Messaging Service Center with Optimized Database Implementation

Sammanfattning: The standardization forum 3GPP has specified Multimedia Messaging Service (MMS) standard including an MMS Relay-Server that allows users to send and receive messages including multimedia contents like text, images, audio and video. A large scale Multimedia Message Service Relay-Server implementation needs an efficient database solution. The database should be able to support storage and manipulation of data for millions of transactions. Consistency and availability should be ensured under heavy traffic load to prevent data losses and service delays. In this thesis, I present the implementation and extended evaluation of a store and forward mechanism for messages kept in MMS Server and I propose a solution to use Berkeley DB as a back-end to Mnesia DBMS to achieve higher storage efficiency.  I show that it is feasible to replace database back-end of Mnesia with Berkeley DB while keeping transparency to application level and having an efficient message store in terms of higher throughput under heavy traffic.