AWS Cloud TutorialLesson 13Free preview

AWS Elastic Load Balancing

This lesson is part of AWS · All levels

Summary

Elastic Load Balancing distributes traffic inbound to several healthy targets so that one failure doesn't make the service down. AWS provides an Application Load Balancer for HTTP/HTTPS traffic, a Network Load Balancer for high-performance TCP/UDP, and a Gateway Load Balancer for security devices. Health checks make sure only functional targets receive traffic.

Key points

Load balancers divide traffic into many healthy targets
ALB works on layer 7 and supports path/host-based routing
NLB is working on layer 4 with very low latency.
Health check eliminates the failed target from the active list

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