Real-Time Event Streaming: Kafka vs Redis Streams vs NATS in 2026

Real-Time Event Streaming: Kafka vs Redis Streams vs NATS in 2026 Every backend eventually needs event streaming — whether it's processing user activity, syncing microservices, or building real-time dashboards. The three dominant choices in 2026 are Kafka, Redis Streams, and NATS JetStream. Each has different strengths, and picking wrong means either over-engineering or hitting a wall. This guide compares all three with real code, benchmarks, and decision criteria. Quick Comparison Feature Kafka Redis Streams NATS JetStream Throughput 1M+ msg/s 500K msg/s 800K+ msg/s Latency (p99) 5-20ms <1ms 1-5ms Persistence Disk (unlimited) Memory + AOF Disk or Memory Ordering Per-partition Per-stream Per-stream Consumer groups Yes Yes Yes Replay Yes (offset) Yes (ID-based) Yes Ops complexity High Low Medium Best for High-volume pipelines Low-latency, small scale Cloud-native microservices Kafka: The Data Pipeline Workhorse Kafka excels when you need guaranteed delivery, massive throughput, and long