Apache CouchDB

Apache CouchDB is an open-source NoSQL document-oriented database that uses JSON to store data, JavaScript as its query language using MapReduce, and HTTP for an API.

What is CouchDB?

CouchDB is a database that completely embraces the web. It stores your data with JSON documents and lets you access your documents and query your indexes with your web browser, via HTTP. CouchDB is designed for high availability and partition tolerance.

Key Features

• HTTP API: All database operations are done via HTTP requests, making it accessible from any language.
• JSON Storage: Data is stored in a flexible JSON format.
• Replication: Native support for master-master replication, enabling data synchronization across multiple servers or devices.
• MapReduce: Uses JavaScript-based MapReduce functions for data querying and transformation.
• ACID Semantics: Provides ACID properties at the document level.

Typical Use Cases

CouchDB is ideal for applications that require offline data synchronization (like mobile apps), content management systems, and systems where data needs to be replicated across diverse geographical locations.