Azure Cosmos DB 的区域可用性Regional presence with Azure Cosmos DB

Azure Cosmos DB 是 Azure 中的一项基础服务,默认情况下,在所有提供 Azure 的区域均可使用。Azure Cosmos DB is a foundational service in Azure, and, by default, is always available in all regions where Azure is available.

Cosmos DB 在提供给客户的所有五种不同的 Azure 云环境中均可使用:Cosmos DB is available in all five distinct Azure cloud environments available to customers:

  • Microsoft 与中国最大的 Internet 提供商世纪互联展开独特合作,推出了 Azure 中国世纪互联****。Azure China 21Vianet is available through a unique partnership between Microsoft and 21Vianet, one of the country's largest internet providers in China.

采用多区域分布的区域覆盖Regional presence with multiple-region distribution

Azure Cosmos DB 公开的所有 API(包括 SQL、MongoDB、Cassandra、Gremlin 和表)默认情况下在所有 Azure 中国区域均可用。All APIs exposed by Azure Cosmos DB (including SQL, MongoDB, Cassandra, Gremlin, and Table) are available in all Azure China regions by default. 例如,所有 Azure 中国区域中的 Azure Cosmos DB 可以公开 MongoDB 和 Cassandra API。For example, you can have MongoDB and Cassandra APIs exposed by Azure Cosmos DB in all of the Azure China regions.

Azure Cosmos DB 是多区域分布式数据库服务。Azure Cosmos DB is a multiple-regionally distributed database service. 可将任意数量的 Azure 区域与 Azure Cosmos 帐户相关联,并且数据会自动且透明地得到复制。You can associate any number of Azure regions with your Azure Cosmos account and your data is automatically and transparently replicated. 可随时向 Azure Cosmos 帐户添加或从中删除区域。You can add or remove a region to your Azure Cosmos account at any time. 借助统包多区域分布功能和多主控复制协议,Azure Cosmos DB 能够在第 99 百分位提供不到 10 毫秒的读写延迟、提供 99.999 的读写可用性并能够在与 Azure Cosmos 帐户相关的所有区域中灵活扩展预配的读写吞吐量。With the turnkey multiple-region distribution capability and multi-mastered replication protocol, Azure Cosmos DB offers less than 10 ms read and write latencies at the 99th percentile, 99.999 read and write availability, and ability to elastically scale provisioned throughput for reads and writes across all the regions associated with your Azure Cosmos account. Azure Cosmos DB 还提供五种定义完善的一致性模型,可以选择对数据应用特定的一致性模型。Azure Cosmos DB, also offers five well-defined consistency models and you can choose to apply a specific consistency model to your data. 最后,Azure Cosmos DB 是业内唯一一种提供综合服务级别协议 (SLA) 的数据库服务,包括预配的吞吐量、第 99 百分位的延迟、高可用性和一致性。Finally, Azure Cosmos DB is the only database service in the industry that provides a comprehensive Service Level Agreement (SLA) encompassing provisioned throughput, latency at the 99th percentile, high availability, and consistency. 以上功能在所有 Azure 云中推出。The above capabilities are available in all Azure clouds.

多区域复制支持仅限于 Azure 中国世纪互联云环境。Multiple-region replication support is scoped to within an Azure China 21Vianet cloud environment.

后续步骤Next steps

现可通过以下文章了解 Azure Cosmos DB 的核心概念:You can now learn about core concepts of Azure Cosmos DB with the following articles: