Ask Confluent #11: More Services, More Metrics, More Fun

The Java property that will refresh DNS cache frequently: java.security.Security.setProperty(“networkaddress.cache.ttl” , “60");

Improvements to DNS lookups in Confluent Platform 5.1.2 (Apache Kafka 2.1.1):

More reasons to upgrade to Confluent Platform 5.1.2

Monitoring clients with old versions:

KIP-188 has lots of important new metrics

If you are worried about “down-conversion” as discussed in Ask Confluent #5, you want to monitor: MBean: kafka.server:type=BrokerTopicMetrics,name=FetchMessageConversionsPerSec,topic=([-.\w]+)

KIP-188 also added a metric for temp memory usage (memory used for conversion and compression) that can be useful

In KIP-272, we’ve added version tag to request metrics, so you can see how many requests per sec you get from each version

Recommendations for Kafka Summit NYC

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