Policy: GCP > Network > Backend Service > CDN > Cache Mode

The expected CDN cache mode for the backend service. A backend service uses exactly one cache mode at a time.

USE_ORIGIN_HEADERS caches only content with valid origin caching headers, CACHE_ALL_STATIC additionally caches static content that carries no caching headers, and FORCE_CACHE_ALL caches all responses regardless of headers — including private or dynamic content, so use it with care.

Which TTL sub-policies apply depends on this mode: all TTLs apply to CACHE_ALL_STATIC, only Default TTL applies to FORCE_CACHE_ALL, and no TTLs apply to USE_ORIGIN_HEADERS (the origin's headers control caching).

Targets

This policy targets the following resource types:

GCP > Network > Backend Service

Primary Policy

This policy is used with the following primary policy:

GCP > Network > Backend Service > CDN

Controls

Setting this policy configures this control:

GCP > Network > Backend Service > CDN

Policy Specification

Schema Type	`string`
Default	`CACHE_ALL_STATIC`
Valid Values [YAML]	`USE_ORIGIN_HEADERS` `CACHE_ALL_STATIC` `FORCE_CACHE_ALL`
Examples [YAML]	`CACHE_ALL_STATIC`

In Your Workspace

Policy Settings by Type report

Developers

Category URI

tmod:@turbot/turbot#/control/categories/security

Policy Type URI

tmod:@turbot/gcp-network#/policy/types/backendServiceCdnCacheMode

GraphQL

query policyType(id: "tmod:@turbot/gcp-network#/policy/types/backendServiceCdnCacheMode") { … }

query policySettings(filter: "policyTypeId:'tmod:@turbot/gcp-network#/policy/types/backendServiceCdnCacheMode'") { … }

query policyValues(filter: "policyTypeId:'tmod:@turbot/gcp-network#/policy/types/backendServiceCdnCacheMode'") { … }

CLI

Get Policy Type

turbot graphql policy-type --id "tmod:@turbot/gcp-network#/policy/types/backendServiceCdnCacheMode"

Get Policy Settings

turbot graphql policy-settings --filter "policyTypeId:tmod:@turbot/gcp-network#/policy/types/backendServiceCdnCacheMode"