Database replication technology having high consistency requirements

This paper proposes a kind of efficient distributed database replication strategy: the application of Eager + Update Anywhere replication protocol and group communication technology, which could be used in the system of the train tickets ordering online that demands high consistency between the database copies. It briefly introduces the principle of this replication protocol and the meaning of group communication technology, and establishes a system model. At the same time, this paper discusses the feasibility of the strategy, analyses the rationality and advantage of this method in the last part.