Architectural Overview of Couchbase Server

Couchbase Server is a scale-out NoSQL database. The core architecture is designed to simplify building modern applications with a flexible data model, powerful SQL-based query language, and a secure core database platform that provides high availability, scalability, and performance. Couchbase Server consists of a single package that is installed on all nodes within a cluster. Through the SDKs (also known as client libraries), developers can write applications in the language of their choice (Java, Node.js, .NET or others) and connect to a Couchbase Server cluster to perform read and write operations and queries across key-value records and/or JSON documents with low latencies (sub-millisecond) at high throughput rates (millions of operations per second). To understand Couchbase's runtime behaviour it is important to understand the high-level Server Architecture, Data Model, Client Connectivity, Management infrastructure and tooling, and Security.