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System Design Quiz Practice
Active Recall Drill Session
← Exit Session
Question 1 of 1
medium
System Design
In the cache hierarchy (browser → CDN → application cache → database), what does each layer that serves a hit save?
A
Nothing meaningful, it's just redundant
B
Latency, origin load, and bandwidth — a hit at any layer means the layers behind it never see the request at all
C
Only latency, never load on the origin
D
Only bandwidth
Check Answer