URL maps for routing in GCP - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a URL map in Google Cloud Platform?

A URL map is a configuration that directs incoming web traffic to different backend services based on the URL path or host. It helps route users to the right place.

beginner

How does a URL map decide where to send a request?

It checks the URL's host and path against rules you set. When it finds a match, it sends the request to the backend service linked to that rule.

intermediate

What is a host rule in a URL map?

A host rule matches the domain name part of a URL (like example.com) and connects it to path matchers that further decide routing based on URL paths.

intermediate

Why use path matchers in URL maps?

Path matchers let you send different URL paths (like /images or /videos) to different backend services, helping organize traffic efficiently.

beginner

What happens if no URL map rule matches a request?

The request is sent to the default backend service defined in the URL map, ensuring traffic is always handled even if no specific rule matches.

What does a URL map primarily control in GCP?

A Storage of website files

B Routing of incoming web requests to backend services

C User authentication

D Database connections

URL maps control how incoming web requests are routed to backend services based on URL patterns.

Which part of the URL does a host rule in a URL map match?

A The domain name (host)

B The URL path

C The query parameters

D The HTTP headers

Host rules match the domain name part of the URL to decide routing.

If a URL path is '/images', where does the URL map send the request?

A To the database

B To the default backend service only

C To the firewall

D To the backend service linked to the '/images' path matcher

Path matchers route requests based on URL paths like '/images' to specific backend services.

What happens if no host or path rule matches a request in a URL map?

A The request goes to the default backend service

B The request is dropped

C The request is sent to a random backend

D The request is redirected to the homepage

Requests with no matching rules are sent to the default backend service to ensure handling.

Which GCP service commonly uses URL maps for routing?

A Cloud Functions

B Cloud Storage

C Cloud Load Balancing

D BigQuery

Cloud Load Balancing uses URL maps to route traffic to backend services.

Explain how URL maps route traffic in Google Cloud Platform.

Think about how a traffic director sends cars to different roads based on signs.

Describe the role of host rules and path matchers in URL maps.

Host rules are like street names, path matchers are like house numbers.