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

Validating Azure function responsiveness using Application Insights

An application is only useful for a business if it is up and running. Applications might go down for multiple reasons. These reasons include the following:

  • Any hardware failures, such as a server crash, hard disk errors, or any other hardware issue—even an entire datacenter might go down, although this would be very rare.
  • Software errors because of bad code or a deployment error.
  • The site might receive unexpected traffic and the servers may not be capable of handling this traffic.
  • There might be cases where your application is accessible from one country, but not from others.

It is vital to be notified when your site is not available or not responding to user requests. Azure provides a few tools to help by alerting you if your website is not responding or is down. One of these is Application Insights. Let's learn how to configure Application Insights to ping our Azure function...