[Solved] Identify the error in this retry pattern pseudocode: attempts = 0 while attempts — Ans: Sleeping zero seconds causes no delay between retries | Microservices

Microservices - Advanced Patterns

Identify the error in this retry pattern pseudocode:

attempts = 0
while attempts < maxRetries:
  callService()
  if success:
    break
  attempts += 1
  sleep(0)

AThe loop condition should be attempts <= maxRetries

BSleeping zero seconds causes no delay between retries

CThe success condition is checked after incrementing attempts

DThe callService() should be outside the loop

Step-by-Step Solution

Solution:

Step 1: Analyze sleep(0) effect
Sleeping zero seconds means no wait between retries, causing rapid retries.
Step 2: Understand retry best practice
Retries should have delay (e.g., exponential backoff) to avoid overload.
Final Answer:
Sleeping zero seconds causes no delay between retries -> Option B
Quick Check:
Retry delay needed, sleep(0) is error [OK]

Quick Trick: Retry delay must be > 0 to avoid rapid retries [OK]

Common Mistakes:

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