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The purpose of these changes is to add a functional version of node-rdkafka that supports incremental cooperative rebalancing. Given that librdkafka has supported this type of rebalancing for nearly four years, this update aims to bring node-rdkafka in line with librdkafka capabilities and enhancing its functionality.
We use the code from this fork in our production environment for services that handle 5000 requests/messages per second. Using the cooperative-sticky partitioning strategy has shown good results by avoiding "stop-the-world" situations. Specifically, we have observed increased throughput and reduced spikes during scale-up and scale-down operations of pods in Kubernetes.