[Solved] If a server sends this header:Cache-Control: max-age=60, must-revalidateWhat does the must-revalidate directive enforce? | Rest API

Rest API - Caching Strategies

If a server sends this header:
Cache-Control: max-age=60, must-revalidate
What does the must-revalidate directive enforce?

AThe client must revalidate the cached response with the server after expiration before using it

BThe client can use stale cache indefinitely without contacting the server

CThe cache will never expire

DThe client must ignore the cache and always fetch fresh data

Step-by-Step Solution

Solution:

Step 1: Understand must-revalidate directive
must-revalidate forces client to check with server after cache expires before reuse.
Step 2: Compare options with this behavior
Only The client must revalidate the cached response with the server after expiration before using it correctly describes this behavior.
Final Answer:
The client must revalidate the cached response with the server after expiration before using it -> Option A
Quick Check:
must-revalidate = revalidate after expiration [OK]

Quick Trick: must-revalidate forces server check after cache expires [OK]

Common Mistakes:

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