Core Concept

Master Database

It refers to the database used in data insertion, update and deletion. It only supports single master database for now.

Slave Database

It refers to the database used in data query. It supports multiple slave databases.

Master-Slave Replication

It refers to the operation to asynchronously replicate data from the master database to the slave database. Because of master-slave asynchronization, there may be short-time data inconsistency between them.

Load Balance Strategy

Through this strategy, queries are separated to different slave databases.