How can validation-based caching be combined with conditional GET requests to optimize REST API performance?

hard📝 Application Q9 of 15

Rest API - Caching Strategies

AServer ignores client headers and always sends full data

BClient sends If-None-Match or If-Modified-Since headers; server responds 304 if unchanged

CClient caches data without validation headers

DServer sends 500 error if validation headers are missing

Step-by-Step Solution

Solution:

Step 1: Understand conditional GET mechanism
Client sends validation headers like If-None-Match or If-Modified-Since.
Step 2: Server response optimization
If resource unchanged, server replies with 304 Not Modified to save bandwidth.
Final Answer:
Client sends If-None-Match or If-Modified-Since headers; server responds 304 if unchanged -> Option B
Quick Check:
Conditional GET uses validation headers and 304 response = A [OK]

Quick Trick: Use If-None-Match or If-Modified-Since for conditional GET [OK]

Common Mistakes:

MISTAKES

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