Keywords #

• Host

Deploys and installs actual physical resources such as compute nodes and storage nodes.

• Database instance

The database instance is a database service.

• Compute node

A compute node refers to a ShardingSphere service.

• Storage node

Corresponding to a database under a database instance, which is responsible for data storage.

• Cluster

A distributed cluster composed of multiple compute nodes and storage nodes, which is the unit of user management.

• Logical database

A logical database corresponds to a schema in ShardingSphere, and is managed at the cluster level. A cluster can have multiple logical databases with different names.

• Plugin

ShardingSphere is designed with pluggable architecture. Functions can be provided in the form of plugins, including but not limited to data sharding, read/write splitting, etc.