March 2020
Intermediate to advanced
275 pages
6h 59m
English
Content preview from Programming AWS Lambda
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Chapter 10. Conclusion
The goal of this book was for you to learn what it means to build and run applications using serverless technology on AWS, with AWS Lambda at the core of those systems. We hope that you feel empowered to do this, safe in the knowledge that Java is truly a first-class language choice in the serverless world.
We encourage you to reflect on some of the points we’ve tried to emphasize in this book:
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Above all, know that trying out ideas with serverless systems is quick, and cheap. If in doubt, experiment!
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Remember that Lambda code is “just code.” Lambda is not a framework, or an “application server” in the traditional sense—your Lambda functions are just small pieces of Java that process a JSON event. This makes unit testing, and incremental development within your IDE, fast and nimble. Similarly, try not to bloat your functions with unnecessary libraries and frameworks that were designed for alternative runtime models.
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Automate the scripting of building and deploying your functions to the AWS Cloud. You want to be able to rapidly iterate in the same environment that will be processing production events. Use the techniques we’ve shown throughout the book with Maven, SAM, and CloudFormation to enable this.
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As we showed in Chapter 6, spend most of your testing time on quick unit and functional tests that run locally within one JVM along with functions under test, but also invest in the automation of end-to-end tests that exercise your functions running ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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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.