Information processing system, information processing apparatus, load balancing method, database allocation planning method and program for realizing connection distribution for load balancing of distributed database

摘要

An information processing system includes a number of database servers deployed onto a number of physical nodes in a distributed manner. Among the database servers, at least two servers taking care of data different from one another are deployed onto the same physical node and at least one server taking care of the same data as any of the at least two servers are deployed onto at least one other physical node. A distribution section distributes connections by monitoring load on each of the physical nodes and moving a connection with a client from a database server on a physical node with load heavier than a target to a database server on a physical node with load lighter than the target so that the connections are distributed to balance the load.