CDN and Cache Strategy

Workflow

1. Map every cache layer and identify authority for headers/keys.
2. Classify responses as public, private/personalized, immutable assets or non-cacheable mutations.
3. Define cache keys using only representation-changing dimensions.
4. Set TTL/revalidation/stale behavior intentionally and document invalidation.
5. Protect authenticated/cart/checkout/account content from shared-cache leakage.
6. Diagnose with headers and controlled bypass/purge instead of global clearing.
7. Verify HIT/MISS/revalidation behavior and correctness.

Conditional references

• Cache semantics → references/cache-semantics.md.
• Debugging → references/debugging.md.

Asset

Use assets/cache-plan.md to document policy.