Apache CouchDB3.5.3

Apache CouchDB stores application data and synchronizes it across multiple database masters, so users can keep copies current in separate locations. Its multi-primary design supports deployments that extend from large-scale data systems to mobile applications. An intuitive HTTP/JSON API lets web and native applications read and write data using protocols and formats supported by many other tools.

The Couch Replication Protocol moves data between globally distributed server clusters, mobile phones, and web browsers. This enables offline-first applications that continue working through difficult network conditions and synchronize when connections become available. CouchDB stores JSON natively, accepts binary data, and provides a developer-oriented query language with optional MapReduce for efficient retrieval.

A single CouchDB node can operate behind an application server, while a cluster can present one logical database across any number of servers or virtual machines. Clustering increases capacity and availability without requiring changes to the APIs, and the database also works with HTTP proxy servers and load balancers. Each node uses a crash-resistant append-only data structure, while multi-node clusters store data redundantly for continued access.

This Developer Tools software suits developers and other Mac users building applications that need data on their own servers or with a leading cloud provider, from Raspberry Pi systems to large cloud installations. PouchDB, designed for mobile devices and browsers, can replicate with CouchDB to support those clients. Apache CouchDB 3.5.2 runs on MacOS with Apple Silicon (arm64) and is licensed as freeware.