Question

A media company hosts static images and CSS/JS bundles on a Cloud Storage bucket fronted by a global external Application Load Balancer with Cloud CDN enabled. The origin responses do NOT include any Cache-Control headers. The team wants Cloud CDN to cache as much of this static content as possible without requiring the developers to modify origin headers, while still respecting any explicit no-cache directives if they are added later. Which Cloud CDN cache mode should they configure?

Accepted Answer

CACHE_ALL_STATIC, which caches successful responses for common static content types even without cache headers, but honors explicit no-cache directives

Answer

USE_ORIGIN_HEADERS, so caching only occurs when the origin explicitly sets caching headers

Answer

FORCE_CACHE_ALL, which caches all successful responses and ignores any origin cache directives

Answer

BYPASS_CACHE, which forwards all requests to the origin without caching