Book Image

Learning Azure Functions

By : Mitesh Soni, Manisha Yadav
Book Image

Learning Azure Functions

By: Mitesh Soni, Manisha Yadav

Overview of this book

Functions help you easily run small pieces of code in cloud with Azure functions without worrying about a whole application or the infrastructure to run it. With Azure functions, you can use triggers to execute your code and bindings to simplify the input and output of your code. This book will start with the basics of Azure Functions. You will learn the steps to set up the environment and the tools that we will be using in the further chapters. Once you have a better understanding of this, we will be creating our first hello world function app. Later you will be introduced to triggers, how they are used to activate a function, and how binding can be used to output results of a function.You will also explore the steps to create an assembly with complex functionality that can be used by functions. Next, this book will teach you to scale your functions and use them to process data, integrate systems, and build simple APIs and microservices. Finally, this book will cover some diagnostic techniques with Azure App services and best practices of working with Azure Functions. By the end of this book, you will be well-versed with the techniques of scaling your Azure functions and making the most of serverless architecture.
Table of Contents (17 chapters)
Title Page
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Dedication
Preface

Setting up a basic Azure Function


Let's understand Azure Functions and create one in Azure Portal.

  1. Go to https://portal.azure.com. Click on Function Apps in the left sidebar:

There is no Function App available as of now.

  1. Click on the plus+ sign and search for Function Apps. Then click on Create:
  1. Provide the App name, Subscription details, and existing Resource Group. Select Consumption Plan in Hosting Plan. Then select Location:
  1. Select Create New in Storage and click on Create:
  1. Now, let's go to Function Apps in the left sidebar and verify whether the recently created Function App is available in the list or not:
  1. Click on the Function App and we can see the details related to the Subscription, Resource group, URL, Location, App Service Plan / pricing tier.

We can stop or restart the function from the same pane.

  1. The Settings tab provides details on the Runtime version, Application settings, and the limit on daily usage:

It also allows us to keep the Function App in Read/Write or Read Only mode. We can...