读写分离

语法说明

  1. SHOW READWRITE_SPLITTING RULES [FROM schemaName]

返回值说明

列说明
name规则名称
auto_aware_data_source_name自动发现数据源名称（配置动态读写分离规则显示）
write_data_source_name写数据源名称
read_data_source_names读数据源名称列表
load_balancer_type负载均衡算法类型
load_balancer_props负载均衡算法参数

示例

静态读写分离规则

  1. mysql> show readwrite_splitting rules;
  2. +------------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
  3. | name       | auto_aware_data_source_name | write_data_source_name | read_data_source_names | load_balancer_type | load_balancer_props |
  4. +------------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
  5. | ms_group_0 | NULL                        | ds_primary             | ds_slave_0, ds_slave_1 | random             |                     |
  6. +------------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
  7. 1 row in set (0.00 sec)

动态读写分离规则

  1. mysql> show readwrite_splitting rules from readwrite_splitting_db;
  2. +-------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
  3. | name  | auto_aware_data_source_name | write_data_source_name | read_data_source_names | load_balancer_type | load_balancer_props |
  4. +-------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
  5. | pr_ds | ms_group_0                  | NULL                   |                        | random             | read_weight=2:1     |
  6. +-------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
  7. 1 row in set (0.01 sec)

静态读写分离规则和动态读写分离规则

  1. mysql> show readwrite_splitting rules from readwrite_splitting_db;
  2. +-------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
  3. | name  | auto_aware_data_source_name | write_data_source_name | read_data_source_names | load_balancer_type | load_balancer_props |
  4. +-------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
  5. | pr_ds | ms_group_0                  | write_ds               | read_ds_0, read_ds_1   | random             | read_weight=2:1     |
  6. +-------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
  7. 1 row in set (0.00 sec)