Readwrite-Splitting

Syntax

SHOW READWRITE_SPLITTING RULES [FROM schemaName]

Return Value Description

Column Description
name Rule name
auto_aware_data_source_name Auto-Aware discovery data source name(Display configuration dynamic readwrite splitting rules)
write_data_source_name Write data source name
read_data_source_names Read data source name list
load_balancer_type Load balance algorithm type
load_balancer_props Load balance algorithm parameter

Example

Static Readwrite Splitting Rules

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

Dynamic Readwrite Splitting Rules

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

Static Readwrite Splitting Rules And Dynamic Readwrite Splitting Rules

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