Cosmos DB

顺德公农庄

　　类似的数据库还有Google的Spanner。
　　参考：官网说明
　　另一个介绍
Key capabilities
As a globally distributed database service, Azure Cosmos DB provides the following capabilities to help you build scalable, globally distributed, highly responsive applications:

• 　　Turnkey global distribution
  
  
  
  • Your application is instantly available to your users, everywhere. Now your data can be too.
    
  • Don't worry about hardware, adding nodes, VMs or cores. Just point and click, and your data is there.
    
  
  
• 　　Multiple data models and popular APIs for accessing and querying data
  
  
  
  • Support for multiple data models including key-value, document, graph, and columnar.
    
  • Extensible APIs for Node.js, Java, .NET, .NET Core, Python, and MongoDB.
    
  • SQL and Gremlin for queries.
    
  
  
• 　　Elastically scale throughput and storage on demand, worldwide
  
  
  
  • Easily scale throughput at second and minute granularities, and change it anytime you want.
    
  • Scale storage transparently and automatically to cover your size requirements now and forever.
    
  
  
• 　　Build highly responsive and mission-critical applications
  
  
  
  • Get access to your data with single digit millisecond latencies at the 99th percentile, anywhere in the world.
    
  
  
• 　　Ensure "always on" availability
  
  
  
  • 99.99% availability within a single region.
    
  • Deploy to any number of Azure regions for higher availability.
    
  • Simulate a failure of one or more regions with zero-data loss guarantees.
    
  
  
• 　　Write globally distributed applications, the right way
  
  
  
  • Five consistency models models offer strong SQL-like consistency to NoSQL-like eventual consistency, and every thing in between.
    
  
  
• 　　Money back guarantees
  
  
  
  • Your data gets there fast, or your money back.
    
  • Service level agreements for availability, latency, throughput, and consistency.
    
  
  
• 　　No database schema/index management
  
  
  
  • Stop worrying about keeping your database schema and indexes in-sync with your application’s schema. We're schema-free.
    
  
  
• 　　Low cost of ownership
  
  
  
  • Five to ten times more cost effective than a non-managed solution.
    
  • Three times cheaper than DynamoDB.