Explain the concept of graceful degradation in microservices.

Short answer: Graceful degradation is a strategy where, instead of failing completely, the system reduces functionality or serves a simplified version of its features when certain services or components fail.

Explain a bit more

Implementation: Fallbacks: When a microservice is unavailable, provide limited functionality or a static response (e.g., showing a cached product listing instead of live data). Feature Flags: Use feature flags to selectively disable certain features without taking down the entire service. Service Degradation: Prioritize critical services and allow less important services to degrade. For instance, if the User Service is down, show a static user profile page with cached data.

Example code

A Video Streaming Service could show previously loaded content (e.g., most recent videos) if a service responsible for fetching new video content fails.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.