How can combining entry and exit flow with caching improve system performance in a content delivery network (CDN)?

hard🧠 Conceptual Q9 of 15

LLD - Design — Parking Lot System

AEntry flow bypasses cache, exit flow stores all data in database

BEntry flow caches requests, exit flow caches responses to reduce latency

CExit flow caches requests, entry flow caches responses

DCaching is irrelevant to entry and exit flows

Step-by-Step Solution

Solution:

Step 1: Understand caching roles
Entry flow caching can quickly serve repeated requests; exit flow caching stores responses to reduce repeated processing.
Step 2: Apply to CDN context
CDNs use caching at entry and exit to reduce latency and load on origin servers.
Final Answer:
Entry flow caches requests, exit flow caches responses to reduce latency -> Option B
Quick Check:
Caching at entry and exit improves performance [OK]

Quick Trick: Cache both requests and responses for speed [OK]

Common Mistakes:

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