Help Center/ Distributed Message Service for Kafka/ FAQs/ Connections/ Is There a Limit on the Number of Client Connections to a Kafka Instance?
Updated on 2025-09-15 GMT+08:00
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Is There a Limit on the Number of Client Connections to a Kafka Instance?

Yes. The maximum allowed number of client connections varies by instance specifications.

Table 1 Number of connections of later Kafka instances

Flavor

Max. Client Connections per Broker

kafka.2u4g.cluster.small

2,000

kafka.2u4g.single.small

2,000

kafka.2u4g.cluster

2,000

kafka.2u4g.single

2,000

kafka.4u8g.cluster

4,000

kafka.8u16g.cluster

4,000

kafka.12u24g.cluster

4,000

kafka.16u32g.cluster

4,000
Parent topic: Connections