Microservices - Advanced Patterns
In a microservices architecture, Service M calls Service N 7 times per user request, and Service N calls Service O 4 times per call. How many total calls to Service O are made per user request?
In a microservices architecture, Service M calls Service N 7 times per user request, and Service N calls Service O 4 times per call. How many total calls to Service O are made per user request?
medium📝 Analysis Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Calculate calls from Service M to Service N
Service M calls Service N 7 times per user request.Step 2: Calculate calls from Service N to Service O
Each call from Service M to Service N triggers 4 calls to Service O.Step 3: Calculate total calls to Service O
Total calls = 7 (calls from M to N) * 4 (calls from N to O) = 28.Final Answer:
28 -> Option BQuick Check:
Multiply calls per level [OK]
Quick Trick: Multiply calls at each service level [OK]
Common Mistakes:
- Adding calls instead of multiplying
- Ignoring nested calls
- Confusing calls per request with total calls
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