You need to send /api/* requests to one pool of servers and /static/* to another. Which load balancer can do this?

Options

• ✗ A layer 4 (TCP) load balancer
• ✓ A layer 7 (HTTP) load balancer Correct
• ✗ DNS round robin
• ✗ Either layer 4 or layer 7; both see the path

Why

Routing by URL path needs the HTTP request, which only a layer 7 load balancer reads. Layer 4 sees IP addresses and ports, and DNS only picks an address.

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