Which open-source NoSQL database system supports handling massive amounts of data across multiple servers?

• A. MongoDB
• B. Apache Cassandra
• C. Redis
• D. Couchbase

Answer: (B)

Apache Cassandra is specifically designed to handle massive amounts of data across multiple servers, making it highly suitable for big data applications. Its architecture allows for horizontal scalability, meaning organizations can add additional servers to the database cluster with minimal disruption. This key feature enables users to manage large datasets efficiently while maintaining high availability and performance.

Cassandra employs a decentralized architecture, which means there is no single point of failure, helping maintain continuous operations even in the event of node failures. This distributed system is optimized for write-heavy workloads and can handle high volumes of concurrent read and write requests, making it particularly advantageous for applications that require quick access to massive datasets.

While MongoDB, Redis, and Couchbase also serve as popular NoSQL databases, they have different strengths and focus areas. For example, MongoDB provides a flexible schema and is optimized for document storage, Redis is an in-memory data structure store primarily used for caching, and Couchbase combines key-value store capabilities with query language support. However, none of these solutions match the scalability and data distribution capabilities that Cassandra offers for handling large data volumes across various servers.