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Serverless Design Patterns and Best Practices

You're reading from   Serverless Design Patterns and Best Practices Build, secure, and deploy enterprise ready serverless applications with AWS to improve developer productivity

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Product type Paperback
Published in Apr 2018
Publisher Packt
ISBN-13 9781788620642
Length 260 pages
Edition 1st Edition
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Author (1):
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Brian Zambrano Brian Zambrano
Author Profile Icon Brian Zambrano
Brian Zambrano
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Table of Contents (12) Chapters Close

Preface 1. Introduction FREE CHAPTER 2. A Three-Tier Web Application Using REST 3. A Three-Tier Web Application Pattern with GraphQL 4. Integrating Legacy APIs with the Proxy Pattern 5. Scaling Out with the Fan-Out Pattern 6. Asynchronous Processing with the Messaging Pattern 7. Data Processing Using the Lambda Pattern 8. The MapReduce Pattern 9. Deployment and CI/CD Patterns 10. Error Handling and Best Practices 11. Other Books You May Enjoy

Cold starts


One commonality between most, if not all, FaaS providers is the issue of cold starts. Cold starts are defined as the behavior where an invocation of a cloud function which has not been executed in a while takes a considerable amount of time to initialize before fulfilling the request. If you have used Docker, for example, you'll know that creating a new container from an existing image takes slightly longer than starting up a container you have previously run. This Docker container behavior is analogous to the way cloud functions, whether it be AWS Lambda, Google Cloud Functions, or Azure Cloud Functions, behave. If you do any searching around the internet for serverless cold starts, you'll find several blog posts and documentation on the matter.

There isn't a silver bullet for bypassing the cold start issue. However, there are several things to be aware of so that you can minimize their impact on your application.

Keeping cloud functions warm

There are several tips and tricks you...

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