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March 26, 2019 | Episode 25

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

  • Transcript
  • Notes

Do metrics for detecting clients from old versions actually exist? Or is Gwen making features up? This and more useful advice is coming up on today's episode of Ask Confluent.


  • The Java property that will refresh DNS cache frequently:“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
  • Watch the video version of this podcast

Continue Listening

Episode 26April 3, 2019 | 46 min

Magnus Edenhill on librdkafka 1.0

librdkafka has finally reached 1.0! Several important new features include the idempotent producer, sparse broker connections, support for the vaunted KIP-62 and a complete makeover for the C#/.NET client.

Episode 27April 8, 2019 | 58 min

Ben Stopford on Microservices and Event Streaming

In this podcast, Ben Stopford explores the event-driven paradigm and how it relates to the microservice architectures we build today. Ben dives deep into coupling, evolution and challenges of our increasingly data-oriented culture.

Episode 28April 17, 2019 | 22 min

Ask Confluent #12: In Search of the Lost Offsets

Stanislav Kozlovski joins us to discuss common pitfalls when using Kafka consumers and a new KIP that promises to make consumer restarts much smoother.

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