创建过期key扫描任务
功能介绍
创建过期key扫描任务,Redis 3.0不支持过期key扫描。
过期key扫描会对键空间进行Redis的scan扫描,释放内存中已过期但是由于惰性删除机制而没有释放的内存空间。
过期key扫描在主节点上执行,会对实例性能有一定的影响,建议不要在业务高峰期进行。
调用方法
请参见如何调用API。
URI
POST /v2/{project_id}/instances/{instance_id}/scan-expire-keys-task
参数 |
是否必选 |
参数类型 |
描述 |
---|---|---|---|
project_id |
是 |
String |
项目ID。获取方法请参见获取项目ID。 |
instance_id |
是 |
String |
实例ID。 |
请求参数
无
响应参数
状态码: 200
参数 |
参数类型 |
描述 |
---|---|---|
id |
String |
过期key扫描记录ID。 |
instance_id |
String |
实例ID。 |
status |
String |
扫描任务状态。 |
scan_type |
String |
扫描方式。 |
created_at |
String |
扫描任务创建时间,格式为:"2020-06-15T02:21:18.669Z"。 |
started_at |
String |
扫描任务开始时间,格式为:"2020-06-15T02:21:18.669Z"(创建扫描任务时此值为null,不返回)。 |
finished_at |
String |
扫描任务结束时间,格式为:"2020-06-15T02:21:18.669Z"(创建扫描任务时此值为null,不返回)。 |
状态码: 400
参数 |
参数类型 |
描述 |
---|---|---|
error_msg |
String |
错误信息。 |
error_code |
String |
错误码。 |
error_ext_msg |
String |
扩展错误信(暂未使用,赋值为null)。 |
状态码: 401
参数 |
参数类型 |
描述 |
---|---|---|
error_msg |
String |
错误信息。 |
error_code |
String |
错误码。 |
error_ext_msg |
String |
扩展错误信(暂未使用,赋值为null)。 |
状态码: 403
参数 |
参数类型 |
描述 |
---|---|---|
error_msg |
String |
错误信息。 |
error_code |
String |
错误码。 |
error_ext_msg |
String |
扩展错误信(暂未使用,赋值为null)。 |
状态码: 404
参数 |
参数类型 |
描述 |
---|---|---|
error_msg |
String |
错误信息。 |
error_code |
String |
错误码。 |
error_ext_msg |
String |
扩展错误信(暂未使用,赋值为null)。 |
状态码: 500
参数 |
参数类型 |
描述 |
---|---|---|
error_msg |
String |
错误信息。 |
error_code |
String |
错误码。 |
error_ext_msg |
String |
扩展错误信(暂未使用,赋值为null)。 |
请求示例
POST https://{dcs_endpoint}/v2/a4d31cb6-3d72-4fdc-8ec9-6e3a41e47f71/instances/5560df16-cebf-4473-95c4-d1b573c16e79/scan-expire-keys-task
响应示例
状态码: 200
创建过期key扫描任务成功。
{ "id" : "aa735b6f-3d70-44e3-9771-66c6fae7459a", "instance_id" : "5560df16-cebf-4473-95c4-d1b573c16e79", "status" : "waiting", "scan_type" : "manual", "created_at" : "2020-06-15T02:21:18.669Z" }
状态码: 400
非法请求。
{ "error_code" : "DCS.4818", "error_msg" : "Do not support auto expire scan." }
SDK代码示例
SDK代码示例如下。
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package com.huaweicloud.sdk.test; import com.huaweicloud.sdk.core.auth.ICredential; import com.huaweicloud.sdk.core.auth.BasicCredentials; import com.huaweicloud.sdk.core.exception.ConnectionException; import com.huaweicloud.sdk.core.exception.RequestTimeoutException; import com.huaweicloud.sdk.core.exception.ServiceResponseException; import com.huaweicloud.sdk.dcs.v2.region.DcsRegion; import com.huaweicloud.sdk.dcs.v2.*; import com.huaweicloud.sdk.dcs.v2.model.*; public class CreateAutoExpireScanTaskSolution { public static void main(String[] args) { // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security. // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK"); String projectId = "{project_id}"; ICredential auth = new BasicCredentials() .withProjectId(projectId) .withAk(ak) .withSk(sk); DcsClient client = DcsClient.newBuilder() .withCredential(auth) .withRegion(DcsRegion.valueOf("<YOUR REGION>")) .build(); CreateAutoExpireScanTaskRequest request = new CreateAutoExpireScanTaskRequest(); request.withInstanceId("{instance_id}"); try { CreateAutoExpireScanTaskResponse response = client.createAutoExpireScanTask(request); System.out.println(response.toString()); } catch (ConnectionException e) { e.printStackTrace(); } catch (RequestTimeoutException e) { e.printStackTrace(); } catch (ServiceResponseException e) { e.printStackTrace(); System.out.println(e.getHttpStatusCode()); System.out.println(e.getRequestId()); System.out.println(e.getErrorCode()); System.out.println(e.getErrorMsg()); } } } |
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# coding: utf-8 import os from huaweicloudsdkcore.auth.credentials import BasicCredentials from huaweicloudsdkdcs.v2.region.dcs_region import DcsRegion from huaweicloudsdkcore.exceptions import exceptions from huaweicloudsdkdcs.v2 import * if __name__ == "__main__": # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security. # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}" credentials = BasicCredentials(ak, sk, projectId) client = DcsClient.new_builder() \ .with_credentials(credentials) \ .with_region(DcsRegion.value_of("<YOUR REGION>")) \ .build() try: request = CreateAutoExpireScanTaskRequest() request.instance_id = "{instance_id}" response = client.create_auto_expire_scan_task(request) print(response) except exceptions.ClientRequestException as e: print(e.status_code) print(e.request_id) print(e.error_code) print(e.error_msg) |
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package main import ( "fmt" "github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic" dcs "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dcs/v2" "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dcs/v2/model" region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dcs/v2/region" ) func main() { // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security. // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment ak := os.Getenv("CLOUD_SDK_AK") sk := os.Getenv("CLOUD_SDK_SK") projectId := "{project_id}" auth := basic.NewCredentialsBuilder(). WithAk(ak). WithSk(sk). WithProjectId(projectId). Build() client := dcs.NewDcsClient( dcs.DcsClientBuilder(). WithRegion(region.ValueOf("<YOUR REGION>")). WithCredential(auth). Build()) request := &model.CreateAutoExpireScanTaskRequest{} request.InstanceId = "{instance_id}" response, err := client.CreateAutoExpireScanTask(request) if err == nil { fmt.Printf("%+v\n", response) } else { fmt.Println(err) } } |
更多编程语言的SDK代码示例,请参见API Explorer的代码示例页签,可生成自动对应的SDK代码示例。
状态码
状态码 |
描述 |
---|---|
200 |
创建过期key扫描任务成功。 |
400 |
非法请求。 |
401 |
认证信息非法。 |
403 |
请求被拒绝访问。 |
404 |
所请求的资源不存在。 |
500 |
内部服务错误。 |
错误码
请参见错误码。