When Market Leaders Fail: How Apache Pulsar Outperformed Kafka for Gaming

Choosing an event streaming platform based on market popularity alone can backfire, especially for real-time applications. This case study shows how a gaming platform that switched from Apache Kafka to Apache Pulsar achieved a 100x latency improvement (5 seconds to 50ms) while handling 10 million events per second. The lesson applies broadly to developers building high-throughput systems: evaluate architectural decisions against your specific performance requirements, not just industry hype.