Book Image

Azure for Developers. - Second Edition

By : Kamil Mrzygłód
5 (1)
Book Image

Azure for Developers. - Second Edition

5 (1)
By: Kamil Mrzygłód

Overview of this book

Microsoft Azure is currently one of the fastest growing public cloud service providers thanks to its sophisticated set of services for building fault-tolerant and scalable cloud-based applications. This second edition of Azure for Developers will take you on a journey through the various PaaS services available in Azure, including Azure App Service, Azure Functions, and Azure SQL Databases, showing you how to build a complete and reliable system with ease. Throughout the book, you’ll discover ways to enhance your skills when building cloud-based solutions leveraging different SQL/NoSQL databases, serverless and messaging components, containerized solutions, and even search engines such as Azure Cognitive Search. That’s not all!! The book also covers more advanced scenarios such as scalability best practices, serving static content with Azure CDN, and distributing loads with Azure Traffic Manager, Azure Application Gateway, and Azure Front Door. By the end of this Azure book, you’ll be able to build modern applications on the Azure cloud using the most popular and promising technologies to make your solutions reliable, stable, and efficient.
Table of Contents (32 chapters)
1
Part 1: PaaS and Containers
8
Part 2: Serverless and Reactive Architecture
14
Part 3: Storage, Messaging, and Monitoring
22
Part 4: Performance, Scalability, and Maintainability

Azure Cosmos DB models and APIs

As mentioned earlier, Azure Cosmos DB offers six different database models, all sharing the same infrastructure and concepts. This is a great feature that makes this service flexible and able to serve multiple different purposes. In this section, I will briefly describe each database model so that you will be able to select one that best serves your purposes.

SQL

If you think about SQL, you probably see a relational database with tables, relations, and stored procedures. When working with the SQL API in Cosmos DB, in fact, you will work with documents that can be queried using the SQL syntax. Let's assume you want to query documents using the following call:

SELECT * FROM dbo.Order O WHERE O.AccountNumber = "0000-12-223-12"

Here, you can find an example of a query written in C#:

// using Microsoft.Azure.Documents.Client;
// client is DocumentClient class
var order = 
  client.CreateDocumentQuery<Order>(collectionLink...