ShardingSphere 4.x Sharding Read-write splitting Core concept
1 min readAug 27, 2020
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.
