Network Load Balancer (NLB) Cheat Sheet

  • Layer 4 load balancer
  • Supports TCP and UDP protocols
  • No header modification
  • Source IP is preserved in header
  • TLS termination
  • Static IP per AZ by assigning EIP
  • High performance
    • Handles millions of requests per second
    • Extremely low latency
  • Target
    • EC2 Instances
    • ECS Containers
    • IP addresses (VPC and on-premise via Direct Connect)

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