[Solved] Consider this simplified flow:1. Microservice starts2. Requests config from Config... Microservice uses config to connect to DBWhat happens if the Config Server is down when the microservice starts? | Microservices

Microservices - Configuration and Secrets Management

Consider this simplified flow:

1. Microservice starts
2. Requests config from Config Server
3. Config Server returns config
4. Microservice uses config to connect to DB

What happens if the Config Server is down when the microservice starts?

AMicroservice connects to DB without any config

BMicroservice automatically generates default config and continues

CMicroservice uses cached config or fails to start if none available

DMicroservice waits indefinitely for Config Server to respond

Step-by-Step Solution

Solution:

Step 1: Understand Config Server availability impact
If Config Server is down, microservice cannot fetch fresh config at startup.
Step 2: Consider typical microservice behavior
Most microservices cache last known config or fail to start if no config is available.
Final Answer:
Microservice uses cached config or fails to start if none available -> Option C
Quick Check:
Config Server down = use cache or fail [OK]

Quick Trick: Microservices rely on cached config if Config Server is unreachable [OK]

Common Mistakes:

Master "Configuration and Secrets Management" in Microservices

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Consider this simplified flow: