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Serverless on Kubernetes: Knative & KEDA

Scale-to-zero workloads with Knative Serving, event-driven autoscaling with KEDA, and FaaS patterns on Kubernetes.

🎯Key Takeaways
Knative: HTTP scale-to-zero (request-driven)
KEDA: event-driven scale (queue/stream-driven)
Cold start: set minScale=1 for latency-sensitive services

Serverless on Kubernetes: Knative & KEDA

Scale-to-zero workloads with Knative Serving, event-driven autoscaling with KEDA, and FaaS patterns on Kubernetes.

~1 min read
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What you'll learn
  • Knative: HTTP scale-to-zero (request-driven)
  • KEDA: event-driven scale (queue/stream-driven)
  • Cold start: set minScale=1 for latency-sensitive services

Serverless K8s Patterns

Knative Serving: HTTP services that scale to zero when idle and scale up in under 1 second on request (using Kubernetes HPA + Knative activator for cold starts). KEDA (Kubernetes Event-Driven Autoscaling): scale pods based on external metrics like queue depth, Kafka lag, or database rows.

Key takeaways

  • Knative: HTTP scale-to-zero (request-driven)
  • KEDA: event-driven scale (queue/stream-driven)
  • Cold start: set minScale=1 for latency-sensitive services

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