[Solved] A developer uses PATCH to update a user's phone number twice with the same data:PATCH /users/7 {"phone": "123-456"}PATCH /users/7 {"phone": "123-456"}What is the likely issue here? | Rest API

Rest API - HTTP Methods

A developer uses PATCH to update a user's phone number twice with the same data:

PATCH /users/7 {"phone": "123-456"}
PATCH /users/7 {"phone": "123-456"}

What is the likely issue here?

APATCH is idempotent, so no issue

BPATCH deletes the phone number on second call

CPATCH may cause side effects on repeated calls

DPATCH returns error on repeated requests

Step-by-Step Solution

Solution:

Step 1: Understand PATCH method
PATCH applies partial updates and is generally not guaranteed to be idempotent.
Step 2: Analyze repeated PATCH calls
Repeated PATCH requests may cause side effects like triggering events or logs multiple times.
Final Answer:
PATCH may cause side effects on repeated calls -> Option C
Quick Check:
PATCH not guaranteed idempotent = possible side effects [OK]

Quick Trick: PATCH can cause side effects; avoid repeated calls without checks [OK]

Common Mistakes:

MISTAKES

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