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If per-IP quota is not configured, the default value is Int.MaxValue to ensure backward compatibility.

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kafka-configs.sh will be extended to support per-IP connection rate quotas.  A new entity type “ips” will be added with the following key (and a value of type Int):

• connection_creation_rate : The total connection rate limit for the connections from a specific IP address. 

For example:

bin/kafka-configs  --bootstrap-server localhost:9091 --alter --add-config 'connection_creation_rate=100' --entity-name 93.284.53.13 --entity-type ips

Default connection rate quotas for an IP address can be configured by omitting entity name. For example:

bin/kafka-configs  --bootstrap-server localhost:9091 --alter --add-config 'connection_creation_rate=100' --entity-type ips

Connection rate throttling behavior

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