Database Sharding:?

Short answer: Partition the database into smaller, manageable parts (shards) based on a key (e.g., user ID). Each microservice can manage its own shard.

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.