Book Image

Serverless Design Patterns and Best Practices

By : Brian Zambrano
Book Image

Serverless Design Patterns and Best Practices

By: Brian Zambrano

Overview of this book

Serverless applications handle many problems that developers face when running systems and servers. The serverless pay-per-invocation model can also result in drastic cost savings, contributing to its popularity. While it's simple to create a basic serverless application, it's critical to structure your software correctly to ensure it continues to succeed as it grows. Serverless Design Patterns and Best Practices presents patterns that can be adapted to run in a serverless environment. You will learn how to develop applications that are scalable, fault tolerant, and well-tested. The book begins with an introduction to the different design pattern categories available for serverless applications. You will learn thetrade-offs between GraphQL and REST and how they fare regarding overall application design in a serverless ecosystem. The book will also show you how to migrate an existing API to a serverless backend using AWS API Gateway. You will learn how to build event-driven applications using queuing and streaming systems, such as AWS Simple Queuing Service (SQS) and AWS Kinesis. Patterns for data-intensive serverless application are also explained, including the lambda architecture and MapReduce. This book will equip you with the knowledge and skills you need to develop scalable and resilient serverless applications confidently.
Table of Contents (18 chapters)
Title Page
Copyright and Credits
Dedication
Packt Upsell
Contributors
Preface
Index

Summary


In this chapter, we walked through the entire process of creating a three-tier web application with a serverless architecture using a GraphQL interface. The vast majority of this application is similar to the REST version of the same application. We learned the changes needed to migrate from a REST interface and design to a GraphQL design, both from the perspective of application code and serverless functions.

Readers should now have a high-level understanding of the advantages of employing a GraphQL interface in a serverless architecture and have enough knowledge to begin implementation of their own serverless GraphQL application.

In Chapter 4Integrating Legacy APIs with the Proxy Pattern, we will work through yet another web application pattern for proxying API requests from clients through a serverless application to a legacy API.