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

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