AWS Elastic Load Balancing Concepts

External

• https://docs.aws.amazon.com/elasticloadbalancing/index.html#lang/en_us

Internal

• AWS Elastic Load Balancing

Load Balancer Types

Used by Amazon ECS.

Application Load Balancer

Allows containers to use dynamic host port mapping (multiple tasks allowed per container instance). Multiple services can use the same listener port on a single load balancer with rule-based routing and paths.

Network Load Balancer

Network Load Balancers

A Network Load Balancer functions at the fourth layer of the Open Systems Interconnection (OSI) model. After the load balancer receives a request, it selects a target from the target group for the default rule using a flow hash routing algorithm.