What is Apache Cassandra ? apache Cassandra is a distributed and No-SQL database management system and use for big Data and Analytics on big Companies. Store data in table form like relational databases but differently. Main Part of Cassandra DB 1 - KeySpace 2 - Table 3 - Row/Columns 4 - Primary Key (Partition Key, Clustering Key) Key Features of Cassandra 1 - Distributed: Data is stored across multiple servers (nodes). If one server fails, data isn’t lost. 2 - Horizontal Scalability: You can add new nodes anytime without shutting down the system. 3 - Fault Tolerance: Data is automatically replicated across nodes. If one or more servers fail, the system keeps running. 4 - High Performance: Cassandra can handle millions of requests per second with low latency. 5 - No Single Point of Failure: Unlike traditional databases, there is no central master node. 6 - Schema-Free / Flexible: Similar to MongoDB, Cassandra allows flexible data modeling without a fixed schema.…