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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

Deployment

With a new Lambda function comes the need to deploy our code, which requires a full deployment via sls deploy. As a reminder, any time you add, remove, or otherwise update an AWS resource, a complete CloudFormation update is needed. We need to add a couple of new entries in the serverless.yml file, which will call the new graphql handler functions:

    functions:
GraphQL:
handler: handler.graphql
events:
- http:
path: graphql
method: get
cors: true
- http:
path: graphql
method: post
cors: true

GraphQL will accept both GET and POST requests, so we'll wire methods to the same /graphql endpoint and make sure we enable CORS.

Since we're using new libraries, Graphene and Graphene-SQLAlchemy, we'll need to update our requirements file and rebuild our supporting...

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