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)

Recommendations and best practices

Here a few common best practices and set of recommendations that you should always keep in mind when it comes to testing Lambda functions:

  • Don't take testing lightly: Don't take testing your Lambda functions for granted. Make sure you start with unit testing of your functions and then even perform the integration tests to make sure all the components work together as expected. In some cases, you may even want to run.
  • Perform comprehensive unit testing: Always ensure that each unit test should be able to run independent of other unit tests. Also remember to test each condition of the code one at a time, but test it individually multiple times to ensure that the same result comes up no matter how many times it is executed.
  • Maintaining logical separation: It is always advised to keep the function's business logic separated from Lambda...