[Solved] Given this URL map configuration:{"defaultService": "backendA", "hostRules": [{"hosts": ["example.com"], "pathMatcher": "pm1"}], "pathMatchers": [{"name": "pm1", "defaultService":... | GCP

GCP - Cloud Load Balancing

Given this URL map configuration:

{"defaultService": "backendA", "hostRules": [{"hosts": ["example.com"], "pathMatcher": "pm1"}], "pathMatchers": [{"name": "pm1", "defaultService": "backendA", "pathRules": [{"paths": ["/images/*"], "service": "backendB"}]}]}

Which backend service will handle a request to https://example.com/images/logo.png?

AbackendA

BdefaultService of the load balancer

CbackendB

DNo backend service will handle this request

Step-by-Step Solution

Solution:

Step 1: Match host and path in URL map
The host "example.com" matches the hostRule with pathMatcher "pm1". The path "/images/logo.png" matches the pathRule "/images/*" which routes to backendB.
Step 2: Determine backend service for the request
Since the path matches the pathRule, the request is routed to backendB, not the defaultService backendA.
Final Answer:
backendB -> Option C
Quick Check:
Path match overrides defaultService = backendB [OK]

Quick Trick: Path rules override default service if matched [OK]

Common Mistakes:

Choosing defaultService instead of matched path service
Ignoring hostRules in routing
Assuming no backend handles the request

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Given this URL map configuration:

Step 1: Match host and path in URL map

Step 2: Determine backend service for the request

Final Answer:

Quick Check:

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