# Change UDRedis Shard Capacity - ResizeUDRedisBlockSize

## Overview

Change UDRedis shard capacity






## Definition

### Public Parameters

| Parameter Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **Action**     | string  | Corresponding API command name, the current API is `ResizeUDRedisBlockSize`.                      | **Yes** |
| **PublicKey**  | string  | The user's public key can be obtained from [Console](https://console.dezai.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 [Region and Availability Zone List](/docs/api/summary/regionlist) |**Yes**|
| **Zone** | string | Availability Zone. See [Availability Zone List](/docs/api/summary/regionlist) |**Yes**|
| **ProjectId** | string | Project ID. Leave blank for the default project; sub-accounts must fill this in. Please refer to the [GetProjectList API](/docs/api/summary/get_project_list) |No|
| **SpaceId** | string | Instance ID |**Yes**|
| **BlockId** | string | Shard ID |**Yes**|
| **BlockSize** | int | Shard Capacity (Unit: GB) 4/8/12/16/20 |**Yes**|
| **StartTime** | int | Task execution timestamp, the timestamp must be within the range of the next day. If not provided or the value is 0, it will be executed immediately. |No|
| **HighPerformance** | boolean | Whether it is performance-enhanced. Defaults to false or not filled, true indicates performance-enhanced. |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.dezai.com/?Action=ResizeUDRedisBlockSize
&Region=cn-zj
&Zone=cn-zj-01
&ProjectId=gQWNotAR
&SpaceId=djlgyuzz
&BlockId=GYtfFOaF
&BlockSize=RxLWGOKx
&OnRewriteTime=false
&StartTime=9
&HighPerformance=true
```

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