Apache CouchDB is a document-oriented NoSQL database that emphasizes reliability, replication, and offline-friendly sync patterns using JSON and HTTP APIs. Designed for distributed systems, CouchDB excels in multi-primary sync scenarios that scale from big data to mobile applications.
- Document-centric applications requiring flexible schemas
- Multi-site replication and sync workflows with eventual consistency
- Systems that benefit from HTTP-first data access
- Offline-first applications with synchronization capabilities
- Content management systems and mobile applications
- Multi-master replication model: Seamless synchronization between databases across nodes or devices
- MVCC-based concurrency behavior: Multi-Version Concurrency Control for consistent reads and writes
- REST/HTTP API with JSON documents: Intuitive HTTP/JSON API designed for reliability
- Built-in admin and clustering capabilities: Web-based Fauxton interface and cluster management
- Partitioned databases: Enhanced performance and data organization
- Crash-resistant append-only data structure: Ensures data integrity
- Native JSON support: Direct JSON document storage with binary data handling
- Developer-friendly query language: Both traditional MapReduce views and Mango query server
- Runtime: Erlang/OTP (requires OTP 26.2.5.16 for CouchDB 3.5.1, OTP 25.3.2.18 for 3.4.3)
- Language: Erlang
- Protocol: HTTP/JSON
- Latest Version: 3.5.1 (released November 2025)
- Stable Version: 3.4.3
- Requirements: Erlang/OTP 26.2.5.16+ for latest, 25.3.2.18+ for stable
- Active Apache project with regular release cycles
- Strong fit for sync/replication-driven use cases
- Maintains two most recent releases for CVEs (older versions unsupported)
¶ History and References