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TDMQ for CKafka
문서TDMQ for CKafkaOperation GuideSmart OpsElastic ScalingElastic Bandwidth
Elastic Bandwidth
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마지막 업데이트 시간:2025-03-24 14:40:16
Elastic Bandwidth
마지막 업데이트 시간: 2025-03-24 14:40:16
PDF 다운로드

Background

TDMQ for CKafka offers fixed bandwidth specifications, and supports the upgrade and downgrade feature. This facilitates users to make adjustments when there are changes in business. However, in the actual business operation scenarios, we often find unpredictable changes in business traffic. Also, due to potential data migration, the expansion time cannot be controlled, thus causing unexpected impacts on the business.
To address such issues, the Pro Edition of TDMQ for CKafka introduces the capability of elastic bandwidth. That is, when the business exceeds the cluster's fixed specifications, a certain degree of elastic space will still be provided to ensure the normal operation of the business.

Feature Overview

The Pro Edition of TDMQ for CKafka supports elastic bandwidth configuration. This is suitable for scenarios where there is occasional sudden traffic on the business. The part exceeding the instance specifications is charged on a pay-as-you-go basis, and the incremental part that can be added has an upper limit. If the business traffic exceeds the instance specifications for most of the time, it is recommended to quickly scale up or down using the existing upgrade and downgrade capability.

Billing Description

The pay-as-you-go method is adopted for elastic bandwidth. Once the billing mode is enabled, no fees will be incurred if elastic bandwidth is not used. The Pro Edition's console offers relevant monitoring metrics to help with observation.
The billing items for elastic bandwidth consist of two parts: elastic production traffic and elastic consumption traffic. The related billing methods are outlined in the following table:
Billing Items
Unit Price
Calculation Formula
Settlement Method
Elastic Production Fees
0.006 USD/GB/hour
Total Elastic Production Traffic (GB) (excluding traffic generated by replicas) x Elastic Pricing (CNY/GB) x Number of Replicas
The time is settled hourly. If the time is less than one hour, it is counted as one hour.
Billing is pushed daily
Elastic Consumption Fees
0.006 USD/GB/hour
Total Elastic Consumption Traffic (GB) (excluding traffic generated by replicas) x Elastic Pricing (CNY/GB)
The time is settled hourly. If the time is less than one hour, it is counted as one hour. Billing is pushed daily

Key Metrics

When you enable elastic bandwidth in CKafka pro edition, you will see two elastic bandwidth metrics on the monitoring interface. Based on these metrics, you can observe whether the elastic space has been triggered for use, and it can also serve as a reference for billing calculations.
Elastic bandwidth production traffic
Sum of elastic bandwidth production traffic usage of this cluster instance in the selected time granularity.
elastic bandwidth consumption traffic
Sum of elastic bandwidth consumption traffic usage of this cluster instance in the selected time granularity.

Elastic Bandwidth Space

Available space of elastic bandwidth. It is related to Pro Edition cluster specifications, and below is the corresponding elastic interval.
Bandwidth Range (MB/s)
Upward Adjustment Margin (MB/s)
20~100
30
120~300
60
320~600
100
620~900
200
920~1200
600
1,600 and above
700

Use Limits

1. Current elastic bandwidth configuration does not support deactivation once enabled.
2. This feature is in allowlist grayscale testing. To enable, you may Contact Us.

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