Explore the capabilities of Apache Cassandra Sidecar in this 20-minute conference talk presented by Francisco Guerrero Hernandez and Saranya Krishnakumar from Apple, Inc. Learn how this reactive service enables new use cases for Apache Cassandra databases by efficiently utilizing existing hardware through multiplexing concurrent tasks. Discover how Sidecar optimizes inbound and outbound streaming of SSTables using zero-copy streaming techniques, while maintaining a low memory and CPU footprint. Gain insights into how Apache Cassandra Sidecar serves as a valuable companion for various Cassandra use cases, enhancing database performance and functionality.