Cloud CDN

Google Cloud CDN (Content Delivery Network) uses Google global edge network to serve content closer to users, reducing latency and improving load times. It integrates natively with Cloud Load Balancing.

Key Features:

1. Global edge network - 100+ cache nodes worldwide for ultra-low latency delivery.

2. HTTP/2 and QUIC - Supports modern protocols for faster content delivery.

3. Cache invalidation - Instantly purge cached content globally.

4. Signed URLs/cookies - Restrict access to cached content using time-limited tokens.

5. Cloud Storage integration - Serve static assets directly from GCS buckets via CDN.

The below example shows how to enable Cloud CDN on a backend service and invalidate cache.

It gives the following output,

Updated backend service [my-web-backend] with CDN enabled.
Created backend bucket [my-static-content].
Cache invalidation request submitted for path: /images/*

Cache Modes:

CACHE_ALL_STATIC - Cache all static content (CSS, JS, images) based on content type.

USE_ORIGIN_HEADERS - Respect Cache-Control headers from your origin server.

FORCE_CACHE_ALL - Cache all responses regardless of origin headers.