Queries the top 100 hot keys over a period of time.
Operation description
If the number of queries per second (QPS) of a key is greater than 3,000, the key is considered a hot key.
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If you use an Alibaba Cloud SDK, make sure that the aliyun-sdk-core version is later than 4.3.3. We recommend that you use the latest version.
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The version of Database Autonomy Service (DAS) SDK must be 1.0.2 or later.
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If you use an SDK to call API operations of DAS, you must set the region ID to cn-shanghai.
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This operation is available only for an ApsaraDB for Redis instance of one of the following versions:
- The instance is a Community Edition instance that uses a major version of 4.0 or later or a performance-enhanced instance of the Enhanced Edition (Tair).
- The ApsaraDB for Redis instance is updated to the latest minor version.
Debugging
Authorization information
The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action
policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:
- Operation: the value that you can use in the Action element to specify the operation on a resource.
- Access level: the access level of each operation. The levels are read, write, and list.
- Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level,
All Resources
is used in the Resource type column of the operation.
- Condition Key: the condition key that is defined by the cloud service.
- Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
Operation | Access level | Resource type | Condition key | Associated operation |
---|---|---|---|---|
hdm:DescribeTopHotKeys | get |
|
| none |
Request parameters
Parameter | Type | Required | Description | Example |
---|---|---|---|---|
ConsoleContext | string | No | The reserved parameter. | None |
InstanceId | string | Yes | The ID of the ApsaraDB for Redis instance. You can call the DescribeInstances operation to query the ID. | r-bp18ff4a195d**** |
NodeId | string | No | The ID of the data shard on the ApsaraDB for Redis instance. You can call the DescribeRoleZoneInfo operation to query the ID. | r-****-db-0 |
StartTime | string | Yes | The beginning of the time range to query. Set this parameter to a UNIX timestamp representing the number of milliseconds that have elapsed since January 1, 1970, 00:00:00 UTC. | 1596177993000 |
EndTime | string | Yes | The end of the time range to query. Set this parameter to a UNIX timestamp representing the number of milliseconds that have elapsed since January 1, 1970, 00:00:00 UTC. Note
| 1596177993001 |
Response parameters
Examples
Sample success responses
JSON
format
{
"Message": "Successful",
"RequestId": "B6D17591-B48B-4D31-9CD6-9B9796B2****",
"Data": {
"HotKey": [
{
"Db": 0,
"Key": "abc:def:eng",
"Hot": "5500~6000",
"KeyType": "zset",
"Lfu": 253,
"NodeId": "r-x****-db-0"
}
]
},
"Code": "200",
"Success": "true"
}
Error codes
HTTP status code | Error code | Error message |
---|---|---|
400 | InvalidParams | The request parameters are invalid. |
403 | NoPermission | You are not authorized to do this action. |
For a list of error codes, visit the Service error codes.
Change history
Change time | Summary of changes | Operation |
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