The latest enhancements to Couchbase Server's N1QL feature provide significant improvements, including built-in Role-Based Access Control (RBAC), new system keyspaces for monitoring and managing users, adaptive indexes that simplify the creation of complex queries, and index replicas that distribute query performance across a cluster. These updates aim to enhance the overall performance and usability of N1QL, making it easier for developers to create efficient and scalable queries. Additionally, Couchbase Server 5.0 introduces new features such as the CURL function, which allows querying external JSON data, and improved monitoring tools to help users optimize their queries. With these enhancements, Couchbase continues to strengthen its position as a leader in NoSQL databases.