Book Image

Azure Serverless Computing Cookbook - Third Edition

By : Praveen Kumar Sreeram
Book Image

Azure Serverless Computing Cookbook - Third Edition

By: Praveen Kumar Sreeram

Overview of this book

This third edition of Azure Serverless Computing Cookbook guides you through the development of a basic back-end web API that performs simple operations, helping you understand how to persist data in Azure Storage services. You'll cover the integration of Azure Functions with other cloud services, such as notifications (SendGrid and Twilio), Cognitive Services (computer vision), and Logic Apps, to build simple workflow-based applications. With the help of this book, you'll be able to leverage Visual Studio tools to develop, build, test, and deploy Azure functions quickly. It also covers a variety of tools and methods for testing the functionality of Azure functions locally in the developer's workstation and in the cloud environment. Once you're familiar with the core features, you'll explore advanced concepts such as durable functions, starting with a "hello world" example, and learn about the scalable bulk upload use case, which uses durable function patterns, function chaining, and fan-out/fan-in. By the end of this Azure book, you'll have gained the knowledge and practical experience needed to be able to create and deploy Azure applications on serverless architectures efficiently.
Table of Contents (14 chapters)
13
Index

Techniques to access application settings

In every application, you will have at least a few configuration items that you might not want to hardcode. Instead, you may want them to change in the future, after the application goes live, without touching the code.

In general, these configuration items can be classified into two categories:

  • Some of the configuration items might be different across environments, for example, the connection strings of the database and the SMTP server.
  • Some of them might be the same across environments, such as some constant numbers that are used in some calculations in the code.

Whatever the possible use of the configuration value, you need to have a place to store configuration values that need to be accessed by the application.

In this recipe, we'll learn how and where to store these configuration items and different techniques to access them from your application code.

Getting ready

Create an Azure function with the...