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TDMQ for CKafka

DocumentaçãoTDMQ for CKafkaProduct IntroductionProduct Series IntroductionCapability Comparison

Capability Comparison

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Última atualização: 2026-03-18 14:27:20
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.

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, a new form of CKafka, aims to completely free up your efforts, allowing you to focus more on business logic. Coming soon, stay tuned.

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
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.
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
✓
×
×
Security management
✓
×
×
Intelligent Ops
Dynamic message retention policy;
automatic disk capacity expansion.
Dynamic message retention policy.
✓
×
×
✓
×
×
✓
×
×
Monitoring and alarms
✓
×
×
Metric sorting
✓
×
×
✓
×
×
✓
×
×
High availability
✓
✓
×
✓
×
×
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.

Serverless

After extensive analysis of online cluster operations, we have identified certain common phenomena:

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 are launching a new generation of CKafka in a Serverless offering. Below are the detailed specifications of CKafka Serverless:
Item
Item Description
Serverless Edition
Specifications
Reserved bandwidth range
Production reserved bandwidth: 90 ~ 1020 MB/s, with a step size of 30 MB/s
Consumption reserved bandwidth: 30-1020 MB/s, with a step size of 10 MB/s
The upper limit for the ratio of consumption reserved bandwidth to production reserved bandwidth is 3:1.
Elastic capacity limit
Supports up to 2x elasticity, that is:
Production elastic capacity limit = 2 * Production reserved bandwidth.
Consumption elastic capacity limit = 2 * Consumption reserved bandwidth.
Amount of storage space
Storage space is theoretically unlimited and billed on a pay-as-you-go basis.
Partition Specs
Current upper limit: 3000 partitions (including replicas)
Future plans: As larger production reserved bandwidth specifications are introduced, the upper limit for the number of partitions will be increased accordingly.
Topic Specs
To ensure data reliability, Serverless instances only support creating Topics with 3 replicas. The Topic specification is Partition Specs/3.
Message retention period
1 day ~ 365 days
Adjust Configuration
Production reserved bandwidth and consumption reserved bandwidth can be upgraded or downgraded independently.
Public Network Bandwidth
Public network access is not currently supported.
Stability
Cross-AZ high-availability deployment
✓
High Data Reliability
3-replica Topic configuration
Isolation
Topic traffic throttling
✓
Security management
SSL authentication
✓
Message query
/
✓
Intelligent Ops
One-click diagnosis
✓

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