Book Image

Guide to NoSQL with Azure Cosmos DB

By : Gaston C. Hillar, Daron Yöndem
Book Image

Guide to NoSQL with Azure Cosmos DB

By: Gaston C. Hillar, Daron Yöndem

Overview of this book

Cosmos DB is a NoSQL database service included in Azure that is continuously adding new features and has quickly become one of the most innovative services found in Azure, targeting mission-critical applications at a global scale. This book starts off by showing you the main features of Cosmos DB, their supported NoSQL data models and the foundations of its scalable and distributed architecture. You will learn to work with the latest available tools that simplify your tasks with Cosmos DB and reduce development costs, such as the Data Explorer in the Azure portal, Microsoft Azure Storage Explorer, and the Cosmos DB Emulator. Next, move on to working with databases and document collections. We will use the tools to run schema agnostic queries against collections with the Cosmos DB SQL dialect and understand their results. Then, we will create a first version of an application that uses the latest .NET Core SDK to interact with Cosmos DB. Next, we will create a second version of the application that will take advantage of important features that the combination of C# and the .NET Core SDK provides, such as POCOs and LINQ queries. By the end of the book, you will be able to build an application that works with a Cosmos DB NoSQL document database with C#, the .NET Core SDK, LINQ, and JSON.
Table of Contents (13 chapters)
Title Page
Packt Upsell

Deploying to multiple regions

The ability to operate at the global scale is one of the significant capabilities of Cosmos DB. It is not merely a database built for an on-premises server farm that has been moved into the cloud. Cosmos DB is a database built for the cloud from scratch. A cloud-native database needs to be global and be able to accommodate the needs of a global-scale application.

Deploying a multi-region database with Cosmos DB requires just a couple of mouse clicks or taps on the Azure portal. Navigate to the Replicate data globally blade of your Cosmos DB account in the Azure portal and start picking as many regions as you need. Once your selection is complete, hit Save and watch the magic happen. However, don't forget that deploying to multiple regions will have an impact on billing.

In the following screenshot, you can see that the global replication for Cosmos DB means selecting regions in the Azure portal. This will help to spread and scale your reads across multiple regions...