CosmosDB is a globally distributed database which supports It is used for both stream and batch workloads. Initially, it was used as a tool internal to Microsoft to run big-data workloads using a SQL like a language called Scope.
- Developer
- Country of Origin
- US
- Start Year
- 2016
- Former Name
- DocumentDB
- Project Type
- Commercial
CosmosDB is a globally distributed database which supports It is used for both stream and batch workloads. Initially, it was used as a tool internal to Microsoft to run big-data workloads using a SQL like a language called Scope.
Indexes
As soon as the data is ingested into the system, all of the data is synchronously indexed and made durable and highly available. The internal Meta-data service, which is part of Cosmos maintains file extent locations similar to HDFS name node. It indexes all of the meta-data by using Hekaton, an in-memory database. Updates to the meta-data state is done using SQL transactions on Hekaton with the help of lock-free indexes such as Bw-Trees. The updates are propogated to other nodes by using RSL-HK rings.
Citations
3 sources- Azure Cosmos DB | Microsoft Azure microsoft.com
- Azure Cosmos DB documentation - Azure Cosmos DB | Microsoft Learn microsoft.com
- https://dl.acm.org/citation.cfm?id=3056100 acm.org