Edge caching on Cloudflare — how do you get 95%+ hit rate without stale data?

Question

Accepted Answer

# Edge Caching on Cloudflare: 95%+ Hit Rate Without Stale Data **Target Audience:** Engineers configuring or interviewing about real-world CDN/edge caching setups — assumes basic HTTP caching knowledge (Cache-Control, TTL), explains the Cloudflare-specific mechanics in plain language. **Difficulty:** Medium to Hard > **How to read this doc:** Every mechanism is explained in plain language first, then tied to the exact Cloudflare feature or header name — that's the vocabulary you'd actually use configuring this or explaining it in an interview. ## 1. The Tension You're Actually Solving High hit rate wants long TTLs — cache it for a month, don't bother the origin. Zero stale data wants short TTLs — check back constantly, don't risk serving something outdated. Those two goals pull in opposite directions, and most "just tune the TTL" advice quietly picks a mediocre compromise between them.

Edge caching on Cloudflare — how do you get 95%+ hit rate without stale data?

Understand the problem

Attempt it yourself

Study the solution

Edge Caching on Cloudflare: 95%+ Hit Rate Without Stale Data

Solution ready — 2 min read

Join the discussion

Discussion (0)

KEEP THE
STREAK ALIVE.

Understand the problem

Attempt it yourself

Study the solution

Edge Caching on Cloudflare: 95%+ Hit Rate Without Stale Data

Solution ready — 2 min read

Join the discussion

Discussion (0)

KEEP THESTREAK ALIVE.

KEEP THE
STREAK ALIVE.