Couchbase NoSQL Database

Couchbase is an award-winning distributed NoSQL cloud database that combines the flexibility of JSON document storage with the power of a SQL-compatible query language (N1QL). Formed in 2011 from the merger of Membase and CouchOne, Couchbase is headquartered in Santa Clara, California, with over 500 enterprise customers including Cisco, eBay, PayPal, and LinkedIn. Key features: N1QL (SQL-compatible query language for JSON documents, extending standard SQL with rich JSON manipulation including nested object queries, array operations, and JOINs between documents). Memory-first architecture (built-in managed caching tier using built-in memcached-compatible caching, reducing latency to sub-millisecond for hot data). Multi-dimensional scaling (independent scaling of data, index, query, search, and eventing services across separate nodes, optimizing resource allocation). Full-text search (integrated Elasticsearch-like full-text search built on Apache Lucene, with faceting, geospatial queries, and relevance scoring). Eventing (JavaScript-based event-driven programming for executing business logic on data changes without external message queues or triggers). Analytics (integrated analytics service for ad-hoc OLAP queries on operational data without ETL pipelines or impact on transactional performance). Mobile and edge (Couchbase Lite embedded database for iOS, Android, and .NET, with Sync Gateway for bidirectional synchronization between edge devices and cloud). Auto-tiering (automatic data tiering between memory, SSD, and HDD based on data temperature, optimizing cost and performance). KV operations (sub-millisecond key-value operations with built-in memcached protocol compatibility for high-throughput workloads). ACID transactions (distributed ACID transactions across multiple documents and buckets since version 6.5). Kubernetes operator (Couchbase Autonomous Operator for Kubernetes-native deployment, scaling, and lifecycle management).