Bird
Raised Fist0

Identify the error in this HTTP response header:

medium📝 Debug Q6 of Q15
Rest API - Rate Limiting and Throttling

Identify the error in this HTTP response header:

HTTP/1.1 503 Service Unavailable
Retry-After: 3.5
ARetry-After header name is misspelled
B503 status code is invalid
CRetry-After value must be an integer or HTTP-date
DRetry-After cannot be used with 503 status
Step-by-Step Solution
Solution:

  1. Step 1: Check Retry-After value format

    Retry-After must be either an integer number of seconds or a valid HTTP-date string.

  2. Step 2: Identify the problem with 3.5

    3.5 is a decimal, which is invalid for Retry-After.

  3. Final Answer:

    Retry-After value must be an integer or HTTP-date -> Option C

  4. Quick Check:

    Retry-After decimal values are invalid [OK]
Quick Trick: Retry-After only accepts integer seconds or HTTP-date [OK]
Common Mistakes:
MISTAKES
  • Using decimal numbers for Retry-After
  • Thinking 503 status disallows Retry-After
  • Misspelling header name

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More Rest API Quizzes
Authentication and Authorization - Client credentials flow - Quiz 4medium Authentication and Authorization - Client credentials flow - Quiz 15hard Error Handling - Error codes for machine consumption - Quiz 4medium Error Handling - Validation error details - Quiz 7medium Error Handling - Error codes for machine consumption - Quiz 8hard Pagination Patterns - Link headers for navigation - Quiz 5medium Pagination Patterns - Keyset pagination for performance - Quiz 4medium Rate Limiting and Throttling - Fixed window algorithm - Quiz 4medium Rate Limiting and Throttling - Why rate limiting protects services - Quiz 5medium Rate Limiting and Throttling - Fixed window algorithm - Quiz 5medium