Book Image

Mastering AWS Lambda

By : Yohan Wadia, Udita Gupta
Book Image

Mastering AWS Lambda

By: Yohan Wadia, Udita Gupta

Overview of this book

AWS is recognized as one of the biggest market leaders for cloud computing and why not? It has evolved a lot since the time it started out by providing just basic services such as EC2 and S3 and today; they go all the way from IoT to Machine Learning, Image recognition, Chatbot Frameworks, and much more! One of those recent services that is also gaining a lot of traction is AWS Lambda! Although seemingly simple and easy to use, Lambda is a highly effective and scalable compute service that provides developers with a powerful platform to design and develop Serverless event-driven systems and applications. The book begins with a high-level introduction into the world of Serverless computing and its advantages and use cases, followed by a deep dive into AWS Lambda! You’ll learn what services AWS Lambda provides to developers; how to design, write, and test Lambda functions; as well as monitor and troubleshoot them. The book is designed and accompanied with a vast variety of real-world examples, use cases, and code samples that will enable you to get started on your Serverless applications quickly. By the end of the book, you will have gained all the skills required to work with AWS Lambda services!
Table of Contents (11 chapters)

Event-Driven Model

So far, we have learned a thing or two about serverless and AWS Lambda. We started off by understanding the entire concept behind serverless architecture and, later, dived into the amazing world of serverless computing with AWS Lambda. We learned how to effectively write, develop, package, and test Lambda functions and also picked up on a few best practices and recommendations along the way.

From this chapter onwards, we will be taking a slightly different approach to understand how few core functionalities of Lambda actually work. For example, how do you trigger Lambda functions to execute based on a trigger? That's exactly what this chapter is going to be all about. In this chapter, we will be covering the following topics:

  • What event-driven model is all about
  • Understanding the event-driven model of Lambda along with a few simple event-driven architectures...