阿里云云监控服务 API 脑裂了？

相同输入不同的返回结果，世界是个草台班子

 aliyun cms describe-metric-last --namespace acs_slb_dashboard --metric-name InstanceTrafficTX --period 900 --start-time '2026-08-21 19:00:00' --end-time '2026-08-21 20:12:00' --dimensions '{"InstanceId": "lb-bp1vi3jrfz2572ex71b1c"}' --api-version 2019-01-01 --region cn-hangzhou
{
	"Code": "200",
	"Datapoints": "[]",
	"Period": "900",
	"RequestId": "01A02683-1D74-5B2E-829C-3C656423E78F",
	"Success": true
}
➜  ~ aliyun cms describe-metric-last --namespace acs_slb_dashboard --metric-name InstanceTrafficTX --period 900 --start-time '2026-08-21 19:00:00' --end-time '2026-08-21 20:12:00' --dimensions '{"InstanceId": "lb-bp1vi3jrfz2572ex71b1c"}' --api-version 2019-01-01 --region cn-hangzhou
{
	"Code": "200",
	"Datapoints": "[]",
	"Period": "900",
	"RequestId": "01A02683-29A6-5427-97DD-71EC0A0CCCAE",
	"Success": true
}
➜  ~ aliyun cms describe-metric-last --namespace acs_slb_dashboard --metric-name InstanceTrafficTX --period 900 --start-time '2026-08-21 19:00:00' --end-time '2026-08-21 20:12:00' --dimensions '{"InstanceId": "lb-bp1vi3jrfz2572ex71b1c"}' --api-version 2019-01-01 --region cn-hangzhou
{
	"Code": "200",
	"Datapoints": "[{\"timestamp\":1787313600000,\"instanceId\":\"lb-bp1vi3jrfz2572ex71b1c\",\"userId\":\"1904758272600239\",\"Minimum\":8.0,\"Maximum\":32.0,\"Average\":22.666,\"Sum\":340.0,\"vip\":\"47.111.176.101\"}]",
	"Period": "900",
	"RequestId": "01A02683-32A7-5E3B-A1BA-F0A60F49C693",
	"Success": true
}
➜  ~ 
➜  ~ aliyun cms describe-metric-last --namespace acs_slb_dashboard --metric-name InstanceTrafficTX --period 900 --start-time '2026-08-21 19:00:00' --end-time '2026-08-21 20:12:00' --dimensions '{"InstanceId": "lb-bp1vi3jrfz2572ex71b1c"}' --api-version 2019-01-01 --region cn-hangzhou
{
	"Code": "200",
	"Datapoints": "[{\"timestamp\":1787313600000,\"instanceId\":\"lb-bp1vi3jrfz2572ex71b1c\",\"userId\":\"1904758272600239\",\"Minimum\":8.0,\"Maximum\":32.0,\"Average\":22.666,\"Sum\":340.0,\"vip\":\"47.111.176.101\"}]",
	"Period": "900",
	"RequestId": "01A02683-3DC4-5093-81D4-2D0ADE2FF929",
	"Success": true
}
➜  ~ aliyun cms describe-metric-last --namespace acs_slb_dashboard --metric-name InstanceTrafficTX --period 900 --start-time '2026-08-21 19:00:00' --end-time '2026-08-21 20:12:00' --dimensions '{"InstanceId": "lb-bp1vi3jrfz2572ex71b1c"}' --api-version 2019-01-01 --region cn-hangzhou
{
	"Code": "200",
	"Datapoints": "[]",
	"Period": "900",
	"RequestId": "01A02683-4501-5B0D-8041-366A8C0A144A",
	"Success": true
}