Last Updated on: Sun, 01 Mar 2026 00:00:02 Content delivery networks reduce latency and offload traffic, but they do not eliminate backend execution cost for uncached or dynamic requests. What CDNs Do Well
They cache static assets and distribute them geographically.
They absorb traffic spikes effectively.
What They Cannot Change
Dynamic checkout flows and personalized dashboards still require origin processing.
If origin execution is slow, CDN presence does not solve that root problem.
Cache Miss Realities
Low cache hit ratios expose backend inefficiencies.
Improving origin cost remains necessary.
Complementary Strategies
CDNs and structural backend improvements reinforce each other.
Key Takeaways
- CDNs improve delivery, not core execution logic.
- Cache misses reveal backend architecture quality.
- Combine edge caching with origin optimization.
- Measure miss cost explicitly.
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