[Solved] Consider a microservice system using Bulkhead pattern with two services:... If Service A receives 10 requests simultaneously and Service B receives 3 requests simultaneously, what happens? | Microservices

Microservices - Resilience Patterns

Consider a microservice system using Bulkhead pattern with two services: Service A and Service B. Each has its own thread pool of size 5. If Service A receives 10 requests simultaneously and Service B receives 3 requests simultaneously, what happens?

AService A processes 5 requests, queues 5; Service B processes all 3 immediately

BService A and B share thread pools, so all 13 requests are processed together

CService A rejects 5 requests; Service B queues all 3

DService A processes all 10 requests immediately; Service B waits

Step-by-Step Solution

Solution:

Step 1: Understand thread pool limits per service
Each service has a separate thread pool of size 5, so max 5 concurrent requests per service.
Step 2: Analyze request handling per service
Service A can process 5 requests concurrently and queue the remaining 5. Service B has only 3 requests, all processed immediately.
Final Answer:
Service A processes 5 requests, queues 5; Service B processes all 3 immediately -> Option A
Quick Check:
Separate pools limit concurrency per service [OK]

Quick Trick: Each service handles requests up to its thread pool size separately [OK]

Common Mistakes:

MISTAKES

Assuming thread pools are shared
Thinking all requests are processed immediately
Confusing queuing with rejection

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If Service A receives 10 requests simultaneously and Service B receives 3 requests simultaneously, what happens?

Step 1: Understand thread pool limits per service

Step 2: Analyze request handling per service

Final Answer:

Quick Check:

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