| What is Azure Cosmos DB and what are its key features? | Azure Cosmos DB is a globally distributed, multi-model database service that offers multi-master replication, horizontal scaling, and multiple consistency models. |
| What are the advantages of using Azure Cosmos DB over traditional relational databases? | Azure Cosmos DB offers global distribution, elastic scalability, low latency, and support for multiple data models, which are not typical features of traditional relational databases. |
Can you explain the different consistency levels available in Azure Cosmos DB? | Azure Cosmos DB offers five consistency levels: Strong, Bounded Staleness, Session, Consistent Prefix, and Eventual. Each provides a trade-off between consistency and performance. |
| What are the different APIs supported by Azure Cosmos DB? | Azure Cosmos DB supports SQL API, MongoDB API, Cassandra API, Gremlin API, and Table API, allowing developers to use familiar languages and patterns. |
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| How does Azure Cosmos DB handle concurrency? | Azure Cosmos DB handles concurrency using either optimistic concurrency control with ETags or by leveraging the session consistency model. |
| How does Azure Cosmos DB ensure data distribution and global scalability? | It uses global distribution and partitioning to distribute data across multiple regions and scales horizontally by adding or removing resources as needed. |
| How does partitioning work in Azure Cosmos DB and why is it important? | Partitioning in Azure Cosmos DB involves distributing data across multiple partitions based on a partition key. It’s important for load balancing and maximizing throughput. |
What is the role of Request Units (RUs) in Azure Cosmos DB? | RUs are a measure of throughput in Azure Cosmos DB. They represent the cost of database operations and are used to manage and scale resources. |
| Can you describe the indexing strategy used by Azure Cosmos DB? | Azure Cosmos DB automatically indexes all data by default, but it allows for customization of the indexing policy to optimize performance and RU |
| How do you secure data in Azure Cosmos DB? | Data in Azure Cosmos DB can be secured using Azure Active Directory, role-based access control, network security with VNETs, and encryption at rest and in transit. |