Azure Cosmos DB Blog

Upgrade your server version from 3.2 to 3.6 for Azure Cosmos DB API for MongoDB

September 11, 2020 Sep 11, 2020 09/11/20

Luis Bosquez

You can now upgrade your applicable MongoDB account to the latest version by using our automatic database upgrade process. The upgrade process doesn't interrupt the availability of your account and it doesn't consume RU/s or decrease the capacity of the database at any point. No existing data or indexes will be affected by this process. ...

Build fault tolerant applications with Cassandra API for Azure Cosmos DB

September 10, 2020 Sep 10, 2020 09/10/20

Abhishek Gupta

Step-by-step guidance about how to build fault tolerant applications using the Azure Cosmos DB Cassandra API with a custom retry policy for 429 errors.

Azure Cosmos DB for the SQL Professional – Referencing Tables

August 24, 2020 Aug 24, 2020 08/24/20

James Serra

How should you handle reference tables that are common in the relational database world when working in Azure Cosmos DB? This post walks through some of the differences SQL professionals will encounter, and how developing in a Azure Cosmos DB environment compares to a relational database management service (RDBMS).

Azure Cosmos DB serverless now in preview

August 19, 2020 Aug 19, 2020 08/19/20

Thomas Weiss

Azure Cosmos DB serverless is a new consumption-based offer that requires no capacity management. It bills only for the Request Units used by database operations and provides a lower entry price for development, testing and small applications with light traffic.

HttpClientFactory in the Azure Cosmos DB .NET SDK

August 19, 2020 Aug 19, 2020 08/19/20

Matias Quaranta

In this post, learn about HTTPClientFactory and how you can use it to pool HTTP connections with Azure Cosmos DB clients.

Change Feed – Unsung Hero of Azure Cosmos DB

July 2, 2020 Jul 2, 2020 07/2/20

Lenni Lobel

One of the most overlooked capabilities in Azure Cosmos DB is its change feed. This little gem sits quietly behind every container in your database, watches for changes, and maintains a persistent record of them in the order they occur. Discover use cases and tips for using this powerful feature.

Data Modeling and Partitioning for Relational Workloads

June 30, 2020 Jun 30, 2020 06/30/20

Lenni Lobel

As a NoSQL database, Azure Cosmos DB requires you think about data modeling in new ways. In this post, we’ll use a familiar real-world relational data model and refactor it as a non-relational data model for Azure Cosmos DB.

New Azure Cosmos DB PowerShell features for greater enterprise manageability

June 25, 2020 Jun 25, 2020 06/25/20

Patrick El-Azem

Learn about the new PowerShell cmdlets available in Az.CosmosDB available now in public preview.

Wildcard indexes in Azure Cosmos DB’s API for MongoDB

June 24, 2020 Jun 24, 2020 06/24/20

Tim Sander

With our latest service update, you can now create wildcard indexes in accounts that use Azure Cosmos DB’s API for MongoDB. Wildcard indexes are a popular feature in MongoDB 4.2 that allow you to index many properties without enumerating each one.

Azure Cosmos DB for AI Engineers

June 23, 2020 Jun 23, 2020 06/23/20

Rodrigo Souza

Learn how AI Engineers can use Azure Cosmos DB for AI Applications.