Performance Test: Flink 1.19 vs. Spark 4.0 vs. Kafka Streams 3.8 Windowed Aggregation Throughput
In high-throughput event processing, windowed aggregation is the silent killer of pipeline performance: a 2024 survey of 1,200 data engineers found 68% of production stream processing outages trace back to misconfigured or underperforming window operations. Our benchmarks of Flink 1.19, Spark 4.0, a
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