Serverless AWS architecture to simulate the processing of transactional "messages".

• Designed with API Gateway on top of SQS and Lambda. Equipped with Observability capabilities including detailed logs, traces and service map on X-Ray.
• Deployed on AWS with Infrastructure as Code on CDK-Python (see ./cdk folder).
• Logging and traces enabled with Lambda PowerTools and optimized with their latest Lambda Layer.
• Backend processing has SQS-retries and eventual failures (SQS-DLQ) trigger a CW-Alarm and an Admin-Email is sent via a custom SNS-Topic.
• The source code for the Lambda Function is a "dummy processing" approach, but can be extend to any business logic needs.

The AWS infrastructure solution is deployed with CDK-Python with the resources defined on the cdk folder:

Any transactional application requires production-level observability, and, for this architecture, it's designed as follows:

AWS Cloud Development Kit is an amazing open-source software development framework to programmatically define cloud-based applications with familiar languages.

My personal opinion is that you should learn about CDK when you feel comfortable with cloud-based solutions with IaC on top of AWS Cloudformation. At that moment, I suggest that if you need to enhance your architectures, it's a good moment to use these CDK-based solutions.

The best way to start is from the Official AWS Cloud Development Kit (AWS CDK) v2 Documentation.

• Visual Studio Code
  Visual Studio Code is my main code editor for high-level programming. This is not absolutely necessary, but from my experience, it gives us a great performance and we can link it with Git and GitHub easily.
  

• NodeJs
  NodeJs is a JavaScript runtime built on Chrome's V8 JavaScript engine programming language. The community is amazing and lets us handle async functionalities in elegant ways.
  

• Python
  Python is an amazing dynamic programming language that let us work fast, with easy and powerful integration of different software solutions.
  

• CDK CLI (Toolkit)
  To work with the CDK, it is important to install the main toolkit as a NodeJs global dependency. Please refer to the official AWS Getting started with the AWS CDK
  

Project deployment/destroy commands are explained in detail at ./important_commands.sh, including the necessary steps to configure CDK and do the deployments.

• Big thanks to all the folks who worked hard on these awesome OpenSource projects that I'm using.
  

The information of this repository is based on many online resources, so feel free to use it as a guide for your future projects!

Copyright 2023 Santiago Garcia Arango.