Capability Comparison

Last updated:2026-01-20 16:37:21

Capability Comparison

Last updated: 2026-01-20 16:37:21

TDMQ for CKafka (CKafka) instances come in multiple forms (Serverful and Serverless) to meet user needs in different scenarios. When you purchase a CKafka cluster, it is recommended that you select products based on a combination of factors such as business application scenarios, product capabilities, and usage costs.
Product Series
The following figure shows the product series of TDMQ for CKafka.
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Serverful is a classic form of CKafka. You can purchase clusters of corresponding specifications based on your needs. As your business volume changes, you need to keep a certain level of attention on the CKafka cluster.
Serverless is a new form of CKafka. It is designed to reduce your workload so that you can focus more on your business logic. It is currently in open beta.
Serverful
The cluster types of Serverful are divided into Pro Edition, Advanced Edition, and Standard Edition (no longer available for new purchases) based on different user scenarios. The comparison of each edition is as follows:
Item
Item Description
Pro Edition
Advanced Edition
Standard Edition (No Longer Available for New Purchases)
Architecture
Deployment architecture
Dedicated instances.
Shared physical node resources.
Shared physical node resources.
Stability
SLA guarantee
Service availability: 99.995%.
Storage availability: See CBS SLA Description.
Service availability: 99.95%.
Storage availability: See CBS SLA Description.
Service availability: 99.95%.
Storage availability: See CBS SLA Description.
Specifications
Bandwidth specification range
20–100000 MB/s. For details, see Selection Recommendations.
20–360 MB/s. For details, see Selection Recommendations.
40MB/s, 100MB/s, 150MB/s
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Storage
Supports fixed storage and elastic storage. For elastic storage, the storage space is theoretically unlimited and billed on a pay-as-you-go basis.
Fixed storage only.
Fixed storage only.
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Scale-out
High flexibility, allowing individual scale-out of bandwidth and topic/partition limits, as well as disk capacity expansion.
High flexibility, allowing individual scale-out of bandwidth and topic/partition limits, as well as disk capacity expansion.
Low flexibility, allowing individual expansion of disk capacity.
Isolation
Topic traffic throttling
✓
×
×
Security management
SSL authentication
✓
×
×
Intelligent Ops
Disk watermark adjustment
Dynamic message retention policy;
automatic disk capacity expansion.
Dynamic message retention policy.
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Elastic bandwidth
✓
×
×
﻿
Automatic partition handling
✓
×
×
﻿
One-click diagnosis
✓
×
×
Monitoring and alarms
Advanced monitoring
✓
×
×
﻿
Metric sorting
✓
×
×
﻿
Event logs
✓
×
×
﻿
Export to Prometheus
✓
×
×
High availability
Cross-AZ high-availability deployment
✓
✓
×
﻿
Migrating instances to other AZs
✓
×
×
Upgrade
Online upgrade of the engine version
✓
×
×
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Broker repair and upgrade
Fast upgrade.
Shared cluster with a longer maintenance cycle.
Shared cluster with a longer maintenance cycle.
Advanced service
Technical service
Provides parameter optimization consulting services, allowing you to customize parameter configurations for special business scenarios. You can submit a ticket for application.
Supports basic troubleshooting and issue resolution.
Supports basic troubleshooting and issue resolution.
Serverless
After extensive analysis of online cluster operations, we have identified certain common phenomena:
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1. High costs. Businesses typically exhibit regular peaks and troughs within specific time cycles. To ensure business stability, specifications are reserved based on business peaks.
2. Slow scale-out. Due to the limitations of the technical architecture in the current classic form of CKafka, broker scale-out requires data migration. It may often take days to migrate TB-level data.
To address the aforementioned issues, we have introduced the next-generation form of CKafka: Serverless Edition. Below is the feature list during the open beta.
Note:
1. CKafka Serverless is currently in open beta. Use it in offline scenarios or test environments.
2. It is free to use during the open beta period. An account can create up to 5 instances in a single region.
3. It is available only in the Guangzhou and Singapore regions.
Item
Item Description
Serverless Edition
Specifications
Bandwidth specification range
20–360 MB/s. Only scale-out is supported.
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Storage
Elastic storage.
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Scale-out
Production/consumption bandwidth can be scaled out individually, and there is an upper limit on the number of topics and partitions for different specifications.
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Message retention period
24–72 hours.
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Public network traffic
Not supported during the open beta period.
Security management
SSL authentication
Not supported during the open beta period.
Message query
/
✓
Intelligent Ops
One-click diagnosis
✓
High Availability
Cross-AZ high-availability deployment
High-availability deployment across two AZs by default.
﻿

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Item	Item Description	Pro Edition	Advanced Edition	Standard Edition (No Longer Available for New Purchases)
Architecture	Deployment architecture	Dedicated instances.	Shared physical node resources.	Shared physical node resources.
Stability	SLA guarantee	Service availability: 99.995%. Storage availability: See CBS SLA Description.	Service availability: 99.95%. Storage availability: See CBS SLA Description.	Service availability: 99.95%. Storage availability: See CBS SLA Description.
Specifications	Bandwidth specification range	20–100000 MB/s. For details, see Selection Recommendations.	20–360 MB/s. For details, see Selection Recommendations.	40MB/s, 100MB/s, 150MB/s
		Storage	Supports fixed storage and elastic storage. For elastic storage, the storage space is theoretically unlimited and billed on a pay-as-you-go basis.	Fixed storage only.	Fixed storage only.
		Scale-out	High flexibility, allowing individual scale-out of bandwidth and topic/partition limits, as well as disk capacity expansion.	High flexibility, allowing individual scale-out of bandwidth and topic/partition limits, as well as disk capacity expansion.	Low flexibility, allowing individual expansion of disk capacity.
Isolation	Topic traffic throttling	✓	×	×
Security management	SSL authentication	✓	×	×
Intelligent Ops	Disk watermark adjustment	Dynamic message retention policy; automatic disk capacity expansion.	Dynamic message retention policy.
		Elastic bandwidth	✓	×	×
		Automatic partition handling	✓	×	×
		One-click diagnosis	✓	×	×
Monitoring and alarms	Advanced monitoring	✓	×	×
		Metric sorting	✓	×	×
		Event logs	✓	×	×
		Export to Prometheus	✓	×	×
High availability	Cross-AZ high-availability deployment	✓	✓	×
High availability		Migrating instances to other AZs	✓	×	×
Upgrade	Online upgrade of the engine version	✓	×	×
Upgrade		Broker repair and upgrade	Fast upgrade.	Shared cluster with a longer maintenance cycle.	Shared cluster with a longer maintenance cycle.
Advanced service	Technical service	Provides parameter optimization consulting services, allowing you to customize parameter configurations for special business scenarios. You can submit a ticket for application.	Supports basic troubleshooting and issue resolution.	Supports basic troubleshooting and issue resolution.

Item	Item Description	Serverless Edition
Specifications	Bandwidth specification range	20–360 MB/s. Only scale-out is supported.
		Storage	Elastic storage.
		Scale-out	Production/consumption bandwidth can be scaled out individually, and there is an upper limit on the number of topics and partitions for different specifications.
		Message retention period	24–72 hours.
		Public network traffic	Not supported during the open beta period.
Security management	SSL authentication	Not supported during the open beta period.
Message query	/	✓
Intelligent Ops	One-click diagnosis	✓
High Availability	Cross-AZ high-availability deployment	High-availability deployment across two AZs by default.

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Product Series

Serverful

Serverless