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8.70: Elastic Load Balancing - Coggle Diagram
8.70
: Elastic Load Balancing
Why load balancer
Spread load across multi downstream instance
Expose a single point of access (DNS)
Seamless handle failure
Do regular health check to instance
Provide SSL terminate (HTTPS) to website
High availability across zone
Separate public traffic from private traffic
Why ELB
Is managed load balancer
Cost less
Integrate with many AWS offering/service
AWS certificate manager (ACM), Cloudwatch
EC2 auto scaling group, EC2, Amazon ECS
Route 53, AWS WAF, AWS Global Accelerator
Type of Load Balancer
Classic
v1 old generate (deprecate)
HTTP, HTTPS, TCP, SSL
Applcation
v2 new generation
HTTP, HTTPS, WebSocket
Network
Load Balancer v2
TCP, TLS, UDP
Gateway
Load Balancer
Operate at layer 3 - IP Protocol