Document-oriented NoSQL database with multi-master replication
Core Idea: Apache CouchDB is a document-oriented NoSQL database that uses JSON for documents, JavaScript for MapReduce indexing, and HTTP for its API, with a focus on easy replication between instances.
Key Elements
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Database Architecture:
- Document-oriented NoSQL database
- JSON-based document storage
- HTTP/REST API for interactions
- Multi-master replication capability
- Eventual consistency model
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Key Features:
- Bidirectional synchronization between instances
- Built-in conflict resolution mechanisms
- Revision history for documents
- MapReduce views for indexing and querying
- Change notifications for real-time updates
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Hosting Options:
- Self-hosted servers
- Cloud services (AWS, IBM Cloudant)
- Containerized deployments (Docker)
Performance Considerations
- Works well for document-based data models
- Can handle substantial amounts of data
- Requires proper configuration for production environments
- Database compaction needed to manage revision history
Schema Management
- No fixed schema (schema-less)
- Application-layer validation and schema evolution
- Backward compatibility managed through code
Connections
- Related Concepts: PouchDB (browser/Node.js implementation), NoSQL Databases (database category), Document-Oriented Databases (database type)
- Broader Context: Distributed Database Systems (architectural pattern)
- Applications: Offline-First Applications (implementation pattern), Inkdrop (real-world application)
- Components: CouchDB Replication Protocol (core technology)
References
- Apache CouchDB documentation
- Implementation experiences from Inkdrop development
#database #nosql #replication #json #document-database
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