Eight Bugs, Eight Tests: Testing a Hexagonal Python Service on AWS
22 min read
Fakes, contract tests, moto, real DynamoDB, architecture rules, E2E through API Gateway and a load test. One bug per level, and why the level before misses it.
Posts tagged aws
6 posts· All tags
Serverless Python Microservices on AWS: My Reference Architecture
19 min read
Repos, uv packages, Lambdaliths, Cognito, events and CDK stacks: my serverless AWS setup for Python microservices and the problems behind each decision.
SQS to Step Functions: Pipes vs. Lambda, and Where Failed Messages End Up
22 min read
Nine scenarios in one CDK stack: how EventBridge Pipes and a dispatcher Lambda start Step Functions from SQS, and where a failed message ends up in each case.
AWS Lambda Packaging with Python and uv: Share Code, Skip the Layers
16 min read
How to share your own Python code across Lambda functions using uv local packages and CDK — a simpler alternative to Lambda Layers.