[Solved] A developer wrote this code snippet for handling validation-based caching:if request.headers['If-None-Match'] == resource.etag: return Response(status=200) else: return Response(data=resource.... | Rest API

Rest API - Caching Strategies

A developer wrote this code snippet for handling validation-based caching:

if request.headers['If-None-Match'] == resource.etag:
    return Response(status=200)
else:
    return Response(data=resource.data, status=200)

What is the error in this code?

AIt should compare If-Match header instead

BIt should always return status 404

CIt should return status 304 when ETags match

DIt should ignore ETag and always send data

Step-by-Step Solution

Solution:

Step 1: Check correct status code for matching ETags
When ETags match, server must return 304 Not Modified, not 200.
Step 2: Identify fix in code
Change status to 304 to indicate no data sent.
Final Answer:
It should return status 304 when ETags match -> Option C
Quick Check:
Matching ETags require 304 status = B [OK]

Quick Trick: Use 304 status for unchanged resource [OK]

Common Mistakes:

MISTAKES

Master "Caching Strategies" in Rest API

9 interactive learning modes - each teaches the same concept differently

More Rest API Quizzes

A developer wrote this code snippet for handling validation-based caching: