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

Exploring Event Grid and Azure Event Hubs

In this section, we will explore the basic elements of Event Grid and Event Hub.

Event Grid

Azure Event Grid is used to easily build applications with event-based architectures.

It’s simple and interactive. To start, we select the Azure resource that we want to subscribe to, and then we indicate the event handler or the endpoint of the webhook to which we will send the event.

Event Grid supports all events from Azure services, such as storage blobs and resource groups. Event Grid also supports other external events using custom topics.

The filters provide the ability to route specific events to different endpoints. We can also multicast to multiple endpoints to ensure events are reliably streamed.

Figure 3.2 – Sources and handlers

Figure 3.2 – Sources and handlers

An event source is where the event happens. Several Azure services, including Blob Storage, Media Services, IoT Hubs, and Service Bus, are automatically configured...