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)

Infrastructure management

One of the core and most frequently used use cases for Lambda has been effective management of the AWS infrastructure, mainly around EC2 instances, as this is where a majority of the costs are incurred unnecessarily. Before the advent of Lambda functions, a lot of organizations had to rely on third-party automation tools and services to run simple and straightforward tasks on their instances, such as taking periodic backups of an EBS volume, checking whether an instance is tagged or not, or shutting down large instances if they are not required to run 24/7, just to name a few. The worst issue in this case was also the management of the automation tool itself! In most cases, you would have to run it off an EC2 instance, and this just created an unnecessary overhead for administrators. But not anymore! With Lambda, administrators can now create simple functions...