Book Image

Advanced Serverless Architectures with Microsoft Azure

By : Daniel Bass
Book Image

Advanced Serverless Architectures with Microsoft Azure

By: Daniel Bass

Overview of this book

Advanced Serverless Architectures with Microsoft Azure redefines your experience of designing serverless systems. It shows you how to tackle challenges of varying levels, not just the straightforward ones. You'll be learning how to deliver features quickly by building systems, which retain the scalability and benefits of serverless. You'll begin your journey by learning how to build a simple, completely serverless application. Then, you'll build a highly scalable solution using a queue, load messages onto the queue, and read them asynchronously. To boost your knowledge further, the book also features durable functions and ways to use them to solve errors in a complex system. You'll then learn about security by building a security solution from serverless components. Next, you’ll gain an understanding of observability and ways to leverage application insights to bring you performance benefits. As you approach the concluding chapters, you’ll explore chaos engineering and the benefits of resilience, by actively switching off a few of the functions within a complex system, submitting a request, and observing the resulting behavior. By the end of this book, you will have developed the skills you need to build and maintain increasingly complex systems that match evolving platform requirements.
Table of Contents (8 chapters)

Chapter 2: Microservices and Serverless Scaling Patterns

Activity 2: Implementing Asynchronous Microblog Submission and Caching

  1. Create a new C# Azure Functions project inside a folder called MicroBlogPostFunctions and create a model called MicroBlogPost that accepts a post with a username (email address), title, and content:

    Figure 2.50: MicroBlogPost class

  2. Create a HTTP-triggered function named PostMicroBlogPost that submits these posts to an Azure Storage Queue named MicroBlogPosts:

    Figure 2.51: Function that saves MicroBlogPosts to a queue

  3. Create a function named DequeMicroBlogPosts that takes the posts from the queue and inserts them into a Cosmos DB named MicroBlogSite:

    Figure 2.52: Function that dequeues objects and saves them into a Cosmos DB

  4. Create a function called GetMicroBlogPosts that retrieves posts from the Cosmos DB in a list and uses the expires header to instruct end users to cache the response:

    Figure 2.53: Function that retrieves all MicroBlogPosts and instructs clients to cache them