Couchbase Server 4.6 introduces enhancements designed to improve query performance, replication, security, and data management for its data platform, which supports web, mobile, and IoT applications. The new release enhances N1QL with additional string, date, array, and JSON object functions to simplify data transformations and improve query efficiency. Cross datacenter replication now features timestamp-based conflict resolution, facilitating Last Write Wins conflict management across clusters. Security is bolstered with Pluggable Authentication Modules for centralized password management and a new server secret management feature. Developer previews include flexible data import/export tools and improved full-text search capabilities with MossStore, allowing custom index mappings and more flexible search result sorting. These updates aim to enhance Couchbase's enterprise-level availability, scalability, and security requirements.