Cosmos DB
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.
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