A combination of an independent key routing (IKR) method and a data proxy architecture (DPA) method may be used to route communication messages in a telecommunication network to achieve improved data locality and reduce secondary key lookups. A processor may receive a first communication message that includes subscriber identifiers that uniquely identify a subscriber, generate a plurality of keys for a plurality of message types, identify a first logical scalable unit (LSU) that includes a first memory that stores a first type of data via a database API and a first key, identify a second LSU that includes a second memory that stores a second type of data relating to the subscriber via the database API and a second key of the plurality of keys, store the first communication message and the first key in the first database memory, and store the first key in the second database memory.