Implementing Hexagonal Arch in Serverless Apps
summary
Shows a concrete implementation: a single AWS Lambda contains a core domain layer with two adapters one that writes to DynamoDB and one that sends email via SES and the demo creates a user and successfully sends the welcome message. Claims unit tests exercise only the domain, integration tests cover adapters, and swapping DynamoDB for Aurora only requires replacing the adapter. Emphasizes design discipline and responsibility when splitting functions and code Lambda + DynamoDB + SES adapter per external system
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chapters (11)
- 0:00intro
- 0:20preamble
- 0:45this is the story about how i learned to design resilient applications as a rock star
- 3:44hexagonal architecture
- 5:59serverless architecture
- 11:42the perfect mix
- 14:52with great power comes great responsibility
- 17:19resilient architecture
- 19:41dive into the code - demo
- 25:02do it yourself
- 26:06thank you!
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