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Edge Security Acceleration:DescribePreloadTasks

Last Updated:Mar 28, 2026

Queries prefetch tasks by time, task status, or prefetch URL.

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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

esa:DescribePreloadTasks

get

*Site

acs:esa:{#regionId}:{#accountId}:site/{#SiteId}

None None

Request parameters

Parameter

Type

Required

Description

Example

SiteId

integer

No

The website ID. You can call the ListSites operation to obtain the ID.

123456789****

Content

string

No

The content to prefetch. Exact match is supported.

http://a.com/1.jpg?b=2

PageNumber

integer

No

The page number. Valid values: 1 to 100000. Default value: 1.

1

PageSize

integer

No

The number of entries per page. Default value: 20. Valid values: 1 to 50.

20

StartTime

string

No

The start time. Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC.

2023-03-22T17:00:00Z

EndTime

string

No

The end time. Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC.

Note

The end time must be later than the start time.

2023-03-23T06:23:00Z

Status

string

No

The task status. Valid values:

  • Complete: The task is complete.

  • Refreshing: The task is running.

  • Failed: The task failed.

Complete

Response elements

Element

Type

Description

Example

object

RequestId

string

The request ID.

0AEDAF20-4DDF-4165-8750-47FF9C1929C9

PageNumber

integer

The page number.

1

PageSize

integer

The number of entries per page.

10

TotalCount

integer

The total number of entries returned.

83

Tasks

array<object>

The tasks.

object

Status

string

The task status.

  • Complete: The task is complete.

  • Refreshing: The task is in progress.

  • Failed: The task failed.

Complete

CreateTime

string

The time when the task was created.

2023-03-28 14:28:57

Process

string

The progress of the task, in percentage.

100%

Description

string

The error message returned upon a prefetch task failure. Valid values:

  • Internal Error

  • Origin Timeout

  • Origin Return StatusCode 5XX

Internal Error

Content

string

The prefetched content.

http://a.com/1.jpg?b=2

TaskId

string

The ID of the queried task.

1597854579687428

Examples

Success response

JSON format

{
  "RequestId": "0AEDAF20-4DDF-4165-8750-47FF9C1929C9",
  "PageNumber": 1,
  "PageSize": 10,
  "TotalCount": 83,
  "Tasks": [
    {
      "Status": "Complete",
      "CreateTime": "2023-03-28 14:28:57",
      "Process": "100%",
      "Description": "Internal Error",
      "Content": "http://a.com/1.jpg?b=2",
      "TaskId": "1597854579687428"
    }
  ]
}

Error codes

HTTP status code

Error code

Error message

Description

400 MissingTimeParameter The StartTime and EndTime must be both specified. Please provide both a start time and an end time.
400 InvalidEndTime.Mismatch The specified EndTime is earlier than the StartTime. The end time you entered is earlier than the start time. Please check and try again.
400 DomainNameOverLimit A maximum of 500 domains are supported for each request. Only 500 domain names are supported at a time. Please reduce the number of domain names to request again.
400 InvalidTime The query time cannot exceed the last 3 days. The query time cannot exceed the last 3 days.
400 MissingParameter.ObjectType The ObjectType parameter is required if DomainName or ObjectType is specified. Specify the ObjectType parameter.
400 InvalidStationParameter The specified Station is invalid. The specified node parameter is invalid.
400 TooManyRequests Too many requests.Please try again later. Requests are too frequent, please try again later.
400 InvalidTaskId.Malformed The specified taskId is invalid. The specified task ID is invalid.
400 InvalidParameters.InvalidUrls The specified urls are invalid. The requested URL parameter is invalid.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.