Broadcast Table

Background

Broadcast table YAML configuration is highly readable. The broadcast rules can be quickly understood thanks to the YAML format. ShardingSphere automatically creates the ShardingSphereDataSource object according to the YAML configuration, which reduces unnecessary coding for users.

Parameters

rules:
- !BROADCAST
  tables: # Broadcast tables
    - <table_name>
    - <table_name>

Procedure

1. Configure broadcast table list in the YAML file.
2. Call the createDataSource method of the object YamlShardingSphereDataSourceFactory. Create ShardingSphereDataSource according to the configuration information in YAML files.

Sample

The YAML configuration sample of the broadcast table is as follows:

dataSources:
  ds_0:
    dataSourceClassName: com.zaxxer.hikari.HikariDataSource
    driverClassName: com.mysql.jdbc.Driver
    jdbcUrl: jdbc:mysql://localhost:3306/demo_ds_0?serverTimezone=UTC&useSSL=false&useUnicode=true&characterEncoding=UTF-8
    username: root
    password:
  ds_1:
    dataSourceClassName: com.zaxxer.hikari.HikariDataSource
    driverClassName: com.mysql.jdbc.Driver
    jdbcUrl: jdbc:mysql://localhost:3306/demo_ds_1?serverTimezone=UTC&useSSL=false&useUnicode=true&characterEncoding=UTF-8
    username: root
    password:
rules:
- !BROADCAST
  tables:
    - t_address

Read the YAML configuration to create a data source according to the createDataSource method of YamlShardingSphereDataSourceFactory.

YamlShardingSphereDataSourceFactory.createDataSource(getFile("/META-INF/broadcast-databases-tables.yaml"));