Intermediate LevelCloud Computing (AWS/GCP/Azure)
What is AWS Global Accelerator and how does Anycast routing improve application performance?
❓ Interview Prompt: Explain AWS Global Accelerator, Anycast static IP addresses, AWS global private network routing, and ALB/EC2 failover.
Public internet traffic traverses multiple intermediate internet service provider (ISP) routers, introducing jitter and packet loss. AWS Global Accelerator optimizes global network routing.
How Global Accelerator Works:
1
Static Anycast IPs: Provides 2 static Anycast IP addresses routed to the nearest AWS Edge Location.
2
AWS Global Private Backbone: User traffic enters the AWS global private fiber network at the nearest edge location, bypassing the congested public internet!
3
Instant Health Failover: Continuously monitors endpoint health, failing over client traffic to an alternate AWS region in sub-10 seconds.
Code Implementation Example
hcl
# AWS Global Accelerator routing traffic to regional ALBs
resource "aws_globalaccelerator_accelerator" "main" {
name = "global-app-accelerator"
ip_address_type = "IPV4"
enabled = true
}
resource "aws_globalaccelerator_endpoint_group" "us_east" {
listener_arn = aws_globalaccelerator_listener.http.arn
endpoint_configuration {
endpoint_id = aws_lb.us_east_alb.arn
weight = 100
}
}💡Terraform configuration for AWS Global Accelerator with regional ALB endpoints.
🎯 Interview Key Takeaway
AWS Global Accelerator uses Anycast static IPs to route traffic over AWS's private backbone network, reducing latency and packet loss.
#Global Accelerator#Networking#Anycast#Performance#Intermediate
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