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Scaling Kafka Consumers in Spring Boot: How We Cut Lag and Saved Latency

Scaling Kafka Consumers in Spring Boot: How We Cut Lag and Saved Latency When scaling high-throughput event-driven microservices in fintech, default Spring Kafka consumer configurations often run into…

  • Increase concurrency beyond default single-threaded listeners
  • Implement explicit batch processing and idempotency
  • Match topic partition count with container concurrency

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