Couchbase is a distributed NoSQL cloud database and it enables developers to develop responsive and flexible cloud, mobile, and edge computing applications that scale effectively. It is highly capable of serving application data with 100% uptime.

Features:
Flexible Data Model: JSON documents in the Couchbase server are very helpful in representing application objects and the relationship between objects. This document model is very flexible and helps in changing application objects without having to migrate the database schema or plan for indispensable application downtime.

Scalability: It is very easy to scale with Couchbase Server, both within a cluster of servers as well as between clusters at different data centers.

Developer Integration: Couchbase offers client libraries for multiple programming languages like Java, .Net, PHP, C, Python, Ruby, and Node.js.

Performance: Couchbase spreads the workload across all servers to sustain consistent performance and alleviate bottlenecks at any given server in a cluster.

Secure and Reliable: Couchbase supports access control utilizing usernames and passwords. The credentials and passwords are transmitted securely over the network and the sensitive data can be protected while it is transmitted to or from the client application.