[Solved] Why might an API use X-RateLimit-Reset as a Unix timestamp instead of a relative time in seconds? - Ans: Unix timestamp avoids client clock skew issues and provides absolute reset time | Rest API

Rest API - Rate Limiting and Throttling

Why might an API use X-RateLimit-Reset as a Unix timestamp instead of a relative time in seconds?

AUnix timestamp is smaller in size than relative seconds

BRelative time is harder to calculate on the server

CUnix timestamp avoids client clock skew issues and provides absolute reset time

DRelative time cannot be used in HTTP headers

Step-by-Step Solution

Solution:

Step 1: Understand difference between absolute and relative times
Unix timestamp is an absolute point in time; relative time is duration from now.
Step 2: Consider client clock issues
Absolute time helps clients handle clock differences better than relative durations that may expire during transit.
Final Answer:
Unix timestamp avoids client clock skew issues and provides absolute reset time -> Option C
Quick Check:
Absolute timestamps improve client synchronization [OK]

Quick Trick: Absolute time avoids clock skew problems [OK]

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Why might an API use X-RateLimit-Reset as a Unix timestamp instead of a relative time in seconds?