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Edge Security Acceleration:DescribeDcdnRefreshTaskById

Last Updated:Sep 11, 2025

Call DescribeDcdnRefreshTaskById to query the status of a refresh or prefetch task by its ID.

Operation description

Note
  • You can query data generated within the last three days.

  • You can call this operation up to 30 times per second.

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Test

RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

dcdn:DescribeDcdnRefreshTaskById

get

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

TaskId

string

Yes

The ID of the task to query. You can obtain task IDs by calling the following operations:

Note

You can specify up to 10 task IDs in each request. Separate multiple task IDs with commas (,).

113681**

Response elements

Element

Type

Description

Example

object

TotalCount

integer

The total number of tasks.

2

RequestId

string

The request ID.

E0C2EF95-B1EC-4C93-855E-2059A7DA2B7B

Tasks

array<object>

The list of refresh or prefetch tasks.

object

Status

string

The status of the task. Valid values:

  • Complete: The task is complete.

  • Pending: The task is waiting to be processed.

  • Refreshing: The task is in progress.

  • Failed: The task failed.

Complete

CreationTime

string

The time when the task was created. The time is in Coordinated Universal Time (UTC) and formatted as yyyy-MM-ddTHH:mm:ssZ.

2021-05-10T08:54:23Z

ObjectType

string

The type of the refresh or prefetch task. Valid values:

  • file: File refresh.

  • directory: Directory refresh.

  • preload: File prefetch.

file

Process

string

The progress of the task in percentage.

100%

Description

string

The description of the error if the task failed. Valid values:

  • Internal Error: An internal error occurred.

  • Origin Timeout: The origin server timed out.

  • Origin Return StatusCode 5XX: The origin server returned a 5xx error code.

Internal Error

ObjectPath

string

The path of the object that is refreshed or prefetched.

http://example.com/image_01.png

TaskId

string

The ID of the task.

113681**

Examples

Success response

JSON format

{
  "TotalCount": 2,
  "RequestId": "E0C2EF95-B1EC-4C93-855E-2059A7DA2B7B",
  "Tasks": [
    {
      "Status": "Complete",
      "CreationTime": "2021-05-10T08:54:23Z",
      "ObjectType": "file",
      "Process": "100%",
      "Description": "Internal Error",
      "ObjectPath": "http://example.com/image_01.png",
      "TaskId": "113681**"
    }
  ]
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidParameters The specified parameters are invalid. A parameter is set to an invalid value.
400 InvalidTaskId.Malformed The specified TaskId is invalid. The value specified for the TaskId parameter is invalid.
400 InvalidTaskId The maximum number of taskIds is 10. The number of task IDs (taskIds) cannot exceed 10.
400 InvalidTime The query time cannot exceed the last 3 days. You can query data up to the last three days.
429 TooManyRequests The server is busy. Please try again later. The server is unavailable. Try again later.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.