How many clusters are available in the database?
💡 Model Answer
The number of clusters in a database depends on the database technology and the deployment architecture. In a relational database like PostgreSQL or MySQL, a cluster typically refers to a single instance that may contain multiple databases; you usually have one cluster per environment (dev, test, prod). In a distributed NoSQL database such as Cassandra or MongoDB, a cluster is the entire set of nodes that share data; a typical production cluster might have 10–20 nodes, but the exact number is chosen based on capacity, fault tolerance, and performance requirements. In cloud services like Amazon RDS or Aurora, the cluster is an abstraction that includes a primary instance and read replicas; you can have one cluster per database instance. Therefore, the answer is not a fixed number but depends on the specific database and its scaling strategy.
This answer was generated by AI for study purposes. Use it as a starting point — personalize it with your own experience.
🎤 Get questions like this answered in real-time
Assisting AI listens to your interview, captures questions live, and gives you instant AI-powered answers on a discreet on-screen overlay.
Get Assisting AI — Starts at ₹500