US Patent 10152499 Database replication scaling

A hosted database service may receive a request to replicate data between two locations. Data may be replicated serially during an initial observation period. During the observation period, replication data may be analyzed to detect access patterns involving transaction delimiters and sequential or closely-timed access to data. Related tables may be assigned to replication groups. Replication data for the replication groups may be sent and processed in parallel. During parallel replication, effectiveness of the replication data may be monitored and the replication groups may be periodically readjusted.