Book Image

A Developer's Guide to Building Resilient Cloud Applications with Azure

By : Hamida Rebai Trabelsi
Book Image

A Developer's Guide to Building Resilient Cloud Applications with Azure

By: Hamida Rebai Trabelsi

Overview of this book

To deliver software at a faster rate and reduced costs, companies with stable legacy systems and growing data volumes are trying to modernize their applications and accelerate innovation, but this is no easy matter. A Developer’s Guide to Building Resilient Cloud Applications with Azure helps you overcome these application modernization challenges to build secure and reliable cloud-based applications on Azure and connect them to databases with the help of easy-to-follow examples. The book begins with a basic definition of serverless and event-driven architecture and Database-as-a-Service, before moving on to an exploration of the different services in Azure, namely Azure API Management using the gateway pattern, event-driven architecture, Event Grid, Azure Event Hubs, Azure message queues, FaaS using Azure Functions, and the database-oriented cloud. Throughout the chapters, you’ll learn about creating, importing, and managing APIs and Service Fabric in Azure, and discover how to ensure continuous integration and deployment in Azure to fully automate the software delivery process, that is, the build and release process. By the end of this book, you’ll be able to build and deploy cloud-oriented applications using APIs, serverless, Service Fabric, Azure Functions, and Event Grid technologies.
Table of Contents (18 chapters)
1
Part 1: Building Cloud-Oriented Apps Using Patterns and Technologies
5
Part 2: Connecting Your Application with Azure Databases
13
Part 3: Ensuring Continuous Integration and Continuous Container Deployment on Azure

Exercise 2 – using Azure API Management to proxy a public API

When we design a solution to consume one or more APIs, communication between the different services, systems, and scripts will have to go through an API. Before describing these communications and designing our APIs, we must take into consideration several elements, such as the following:

  • The route structure
  • Authentication and authorization
  • Rate limiting

With Azure API Management, before data is received or sent, you can easily proxy an existing API and modify the input and output.

In most cases, we want to modify the structure of an existing public API, add authentication, limit the number of incoming requests, or even cache the results obtained. This is what we will cover in this section, and we will discover the ease of managing an API and consuming it quickly.

We can use an Azure Logic Apps proxy, Azure App Service, or Azure Functions apps, but in our example, we will use a public...