Courses / AWS
10. AWS Elastic Load Balancer (ALB vs NLB vs Gateway/Classic)
Differences between ALB, NLB, and Gateway/Classic LB and when to choose each.
Infrastructure / AWS
AWS Elastic Load Balancer (ALB vs NLB vs Gateway/Classic)
Load balancers distribute incoming network traffic to your servers; AWS offers different types tuned for HTTP, TCP, and network/gateway use cases.
"I need to route traffic reliably — but should it inspect headers, preserve client IPs, or handle millions of connections?"
ALB (Application Load Balancer) routes HTTP/HTTPS with advanced layer-7 rules and stickiness; NLB (Network Load Balancer) routes TCP/UDP at ultra-high performance and preserves client IP; Gateway/Classic options provide simpler L4 or legacy features for IP-based or edge routing.
"I need to route traffic reliably — but should it inspect headers, preserve client IPs, or handle millions of connections?"
ALB (Application Load Balancer) routes HTTP/HTTPS with advanced layer-7 rules and stickiness; NLB (Network Load Balancer) routes TCP/UDP at ultra-high performance and preserves client IP; Gateway/Classic options provide simpler L4 or legacy features for IP-based or edge routing.