# Set up Read-Write Splitting - SetUDBRWSplitting

## Overview

Set the read-write separation mode






## Definition

### Public Parameters

| Parameter Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **Action**     | string  | Corresponding API command name, the current API is `SetUDBRWSplitting`.                      | **Yes** |
| **PublicKey**  | string  | The user's public key can be obtained from [Console](https://console.scloudsg.com/uaccount/api_manage)                                             | **Yes** |
| **Signature**  | string  | User signature generated based on public key and API command, see [Signature Algorithm](/docs/api/summary/signature.md)  | **Yes** |

### Request Parameters

| Parameter Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **Region** | string | Region. See [List of Regions and Availability Zones](api/summary/regionlist) |**Yes**|
| **Zone** | string | Availability Zone. See [Availability Zone List](api/summary/regionlist) |**Yes**|
| **MasterDBId** | string | DB Instance ID (master) |**Yes**|
| **ReadModel** | string | Read-Write Splitting Strategy |**Yes**|
| **DBIds.N** | string | DBIds.0 represents the UDB master node, DBIds.1 to DBIds.n represent 1 to N slave nodes. |**Yes**|
| **ReadPercents.N** | string | The read ratio of the UDB master-slave nodes. ReadPercents.0 represents the read ratio of the master node, ReadPercents.1 represents the read-write ratio of slave node 1, and so on. |No|
| **DelayThreshold** | int | Time Threshold |No|

### Response Field

| Field Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **RetCode** | int | Return status code. If it is 0, it means successful return. If it is not 0, it means failure. |**Yes**|
| **Action** | string | Operation command name. |**Yes**|
| **Message** | string | Returns an error message, providing detailed description when `RetCode` is non-zero. |No|




## Example

### Request Example
    
```
https://api.scloudsg.com/?Action=SetUDBRWSplitting
&Region=cn-zj
&Zone=cn-zj-01
&MasterDBId=KeQskOid
&DelayThreshold=50
&ReadModel=Uniform
&ReadPercentInfo=ocTIdTxW
```

### Response Example
    
```json
{
  "Action": "SetUDBRWSplittingResponse",
  "RetCode": 0
}
```