[Solved] Consider this simplified pseudo-code for an Ambassador proxy handling requests:... } } } What will happen if the main service is temporarily down? | Microservices

Microservices - Advanced Patterns

Consider this simplified pseudo-code for an Ambassador proxy handling requests:

class AmbassadorProxy {
  sendRequest(request) {
    if (this.isServiceAvailable()) {
      return this.forward(request);
    } else {
      return this.retry(request);
    }
  }
}

What will happen if the main service is temporarily down?

AThe proxy forwards the request without checking availability

BThe proxy retries sending the request until the service is available

CThe proxy immediately returns an error without retrying

DThe proxy stores the request permanently without forwarding

Step-by-Step Solution

Solution:

Step 1: Analyze the sendRequest method logic
The method checks if the service is available. If yes, it forwards the request; otherwise, it retries.
Step 2: Determine behavior when service is down
If the service is down, isServiceAvailable() returns false, so retry(request) is called to resend the request.
Final Answer:
The proxy retries sending the request until the service is available -> Option B
Quick Check:
Service down triggers retry in Ambassador proxy [OK]

Quick Trick: Ambassador retries requests if service unavailable [OK]

Common Mistakes:

Assuming proxy forwards without checking
Thinking proxy returns error immediately
Believing proxy stores requests permanently

Master "Advanced Patterns" in Microservices

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Arch Try Challenge Design Recall Scale

More Microservices Quizzes

Consider this simplified pseudo-code for an Ambassador proxy handling requests:

Step 1: Analyze the sendRequest method logic

Step 2: Determine behavior when service is down

Final Answer:

Quick Check:

Want More Practice?