URL Shortening Service

Classic system design problem, in this case I have built out a small project using SST to deploy to AWS.

Design Decisions

• split into microservices: web, urls and analytics
• url service runs on vpc's with autoscaling to avoid cold starts vs a lambda
• postgres over DynamoDB
• redis caches short URL lookups for 24 hours
• analytics service batches events sent through SQS in a lambda as a fire and forget system
• web running on serverless using svelte with a basic UI.
• Cognito for a managed auth across the services

docker compose up -d
pnpm run dev