Module 7: Configure Highly Available Systems
Cloud Operations on AWS
| Type | Layer | Best For |
|---|---|---|
| Application Load Balancer | Layer 7 (HTTP/HTTPS) | Flexible application routing |
| Network Load Balancer | Layer 4 (TCP) | Extreme performance, static IP |
| Gateway Load Balancer | Layer 3/4 | Third-party virtual appliances |
| Classic Load Balancer | Layer 4 & 7 | Legacy EC2-Classic applications |
Issue: Load balancer generates HTTP 4XX class status codes.
Cause: HTTP 4XX codes represent client-side errors.
Solution: HTTP 400 = malformed request · HTTP 401 = authentication issue · HTTP 408 = client didn't send data in time.
Next: Module 8 — Automate Scaling
Click branch to expand