Book Image

Azure Serverless Computing Cookbook, - Second Edition

By : Praveen Kumar Sreeram, Jason Marston
Book Image

Azure Serverless Computing Cookbook, - Second Edition

By: Praveen Kumar Sreeram, Jason Marston

Overview of this book

Microsoft provides a solution for easily running small segments of code in the cloud with Azure Functions. The second edition of Azure Serverless Computing Cookbook starts with intermediate-level recipes on serverless computing along with some use cases demonstrating the benefits and key features of Azure Functions. You’ll explore the core aspects of Azure Functions, such as the services it provides, how you can develop and write Azure Functions, and how to monitor and troubleshoot them. As you make your way through the chapters, you’ll get practical recipes on integrating DevOps with Azure Functions, and providing continuous integration and continuous deployment with Azure DevOps. This book also provides hands-on, step-by-step tutorials based on real-world serverless use cases to guide you through configuring and setting up your serverless environments with ease. You will also learn how to build solutions for complex, real-world, workflow-based scenarios quickly and with minimal code using Durable Functions. In the concluding chapters, you will ensure enterprise-level security within your serverless environment. The most common tips and tricks that you need to be aware of when working with Azure Functions on production environments will also be covered in this book. By the end of this book, you will have all the skills required for working with serverless code architecture, providing continuous delivery to your users.
Table of Contents (13 chapters)

Configuring the throttling of Azure Functions using API Management

In the previous chapter, we learned that we can use Azure Functions HTTP triggers as the backend web API. If you want to restrict the number of requests by your client applications to, let's say, 10 requests per second, then you might have to develop a lot of logic. Thanks to Azure API Management, you don't need to write any custom logic if you integrate Azure Functions with API Management.

In this recipe, we will learn how to restrict clients to API access only once per minute for a given IP address. The following are the high-level steps that we will follow:

  1. We will create an Azure API Management service
  2. Then, we will integrate Azure Functions with API Management
  3. Then, we will configure request throttling using inbound policies
  4. Finally, we will test the rate limit inbound policy configuration