Container Apps Scaling Patterns

HTTP-based Scaling

Best for APIs and web applications:

scale: \{
  minReplicas: 1
  maxReplicas: 10
  rules: [
    \{
      name: 'http-scaling'
      http: \{
        metadata: \{
          concurrentRequests: '100'
        \}
      \}
    \}
  ]
\}

Queue-based Scaling

Best for background workers:

scale: \{
  minReplicas: 0
  maxReplicas: 30
  rules: [
    \{
      name: 'queue-scaling'
      azureQueue: \{
        queueName: 'orders'
        queueLength: 10
        auth: [
          \{
            secretRef: 'storage-connection'
            triggerParameter: 'connection'
          \}
        ]
      \}
    \}
  ]
\}

Service Bus Scaling

scale: \{
  minReplicas: 0
  maxReplicas: 20
  rules: [
    \{
      name: 'servicebus-scaling'
      custom: \{
        type: 'azure-servicebus'
        metadata: \{
          queueName: 'myqueue'
          messageCount: '5'
        \}
        auth: [
          \{
            secretRef: 'servicebus-connection'
            triggerParameter: 'connection'
          \}
        ]
      \}
    \}
  ]
\}

Recommendations

Workload	Min Replicas	Max Replicas	Rule Type
Production API	1	10-20	HTTP
Dev/Test API	0	5	HTTP
Background Worker	0	30+	Queue/Event
Scheduled Job	0	1	KEDA cron