Byte-Size.Links

Overview

A web app that converts any URL to a short "byte-link", which can easily be used and shared. Below are some examples:

• https://bytesize.link/cron - Online Cron Formatter
• https://bytesize.link/devops - DevOps Periodic Table
• https://bytesize.link/pytorch - Medium Article on Lyft & PyTorch

Website: https://bytesize.link

Architecture

There are Terraform modules to deploy the web client, CI/CD pipeline, and infrastructure to AWS. These modules are found in tf_modules.

The Lambda functions can be found in the lambda_src directory.

Infrastructure Diagram

Notes

• The web servers auto-scale based on CPU to handle traffic.
• The servers are behind a load balancer to distribute web traffic to the scaling web servers.
• GenerateURL uses TensorFlow's Toxicity Classifier Model to filter out inappropriate custom links.
  • The link to the source repository is here.
  • This library had to be included as a Lambda Layer. to work with AWS Lambda

Code Release Diagram

Notes

• CodePipeline is automatically triggered whenever it detects a change in this GitHub repository:
• 1. The code is compiled with CodeBuild, and unit tests are executed against it.
• 2. Once the code is built, and the unit tests pass, the build artifacts are stored in an S3 bucket.
• 3. CodeDeploy uses the stored artifacts and deploys the updated app into the web servers.
• CodeDeploy uses a Blue/Green Deployment, using two live environments:
  • Blue: Uses the existing code
  • Green: Uses the new code
  • After validating that the green environment works properly, I can choose to remove the blue environment
  • If the green environment has issues, I can quickly switch back to the blue environment