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)

Processing data at the edge with Greengrass and Lambda

Greengrass is yet another recent offering in the space of IoT provided by AWS. In simpler terms, Greengrass is an extension of AWS's own IoT service, and it is specifically designed to extend AWS cloud capabilities to local IoT devices, thus making it possible for them to collect and analyze data closer to the source of information. This is made possible by enabling developers to write and execute serverless code. More specifically, developers who use AWS Greengrass can author serverless code using AWS Lambda either on the cloud or on the device itself and conveniently deploy it for the local execution of applications. Here is a representational architecture of Greengrass depicting the Greengrass Core SDK interconnecting various devices with the AWS Cloud:

The AWS Greengrass Core software primarily consists of:

  • A message...