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Which HTTP header is commonly used by servers to tell clients how long to wait before retrying after a 429 Too Many Requests response?

easy📝 Syntax Q12 of 15
Rest API - HTTP Status Codes

Which HTTP header is commonly used by servers to tell clients how long to wait before retrying after a 429 Too Many Requests response?

AContent-Type
BRetry-After
CAuthorization
DUser-Agent
Step-by-Step Solution
Solution:

  1. Step 1: Identify headers related to retrying

    When a server limits requests, it often tells clients how long to wait using a specific header.

  2. Step 2: Match header to purpose

    The Retry-After header indicates the wait time before retrying after 429.

  3. Final Answer:

    Retry-After -> Option B

  4. Quick Check:

    Retry-After header = wait time [OK]
Quick Trick: Retry-After tells you when to try again after 429 [OK]
Common Mistakes:
  • Choosing Content-Type which describes data format
  • Confusing Authorization with retry timing
  • Selecting User-Agent which identifies client software

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