Couchbase

Couchbase works as a Key-Value store (managed memory cache) + Document Database. It is famous for its "memory-first" architecture and N1QL (SQL for JSON).

When to Use

• Caching + Persistence: When you need the speed of Redis but the persistence/querying of MongoDB.
• Mobile Sync: Couchbase Mobile / Sync Gateway provides robust offline-sync for mobile apps.
• SQL on JSON: N1QL allows using standard SQL (SELECT * FROM users JOIN orders) on JSON documents.

Quick Start