March 2020
Intermediate to advanced
275 pages
6h 59m
English
Content preview from Programming AWS Lambda
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Chapter 1. Introduction to Serverless, Amazon Web Services, and AWS Lambda
To start off your serverless journey, we’re going to take you on a brief tour of the cloud and then define serverless. After that, we dive into Amazon Web Services (AWS)—this will be new to some of you and a refresher to others.
With those foundations set, we introduce Lambda—what it is, why you might use it, what you can build with Lambda, and how Java and Lambda work together.
A Quick History Lesson
Let’s travel back in time to 2006. No one has an iPhone yet, Ruby on Rails is a hot new programming environment, and Twitter is being launched. More germane to us, however, is that at this point in time many people are hosting their server-side applications on physical servers that they own and have racked in a data center.
In August 2006 something happened that would fundamentally change this model. Amazon’s new IT division, AWS, announced the launch of Elastic Compute Cloud (EC2).
EC2 was one of the first infrastructure-as-a-service (IaaS) products. IaaS allows companies to rent compute capacity—that is, a host to run their internet-facing server applications—rather than buying their own machines. It also allows them to provision hosts just in time, with the delay from requesting a machine to its availability being on the order of minutes. In 2006 this was all possible because of the advances in virtualization technology—all EC2 hosts at that time were virtual machines.
EC2’s five key advantages are:
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.