Deployment

MealPal uses blue-green deployments via Traefik on a single t4g.micro EC2 instance.

How It Works

./deploy.sh          # Full zero-downtime deploy
./deploy.sh migrate  # Run Alembic migrations
./deploy.sh logs     # View container logs
./deploy.sh status   # Check service status

Deploy Steps

1. Pull latest code from GitHub
2. Build new Docker image
3. Start new container (blue or green) alongside the old one
4. Health check the new container
5. Update Traefik labels to route traffic to the new container
6. Drain connections from the old container
7. Stop the old container

The --no-recreate flag is critical to prevent Traefik from dropping connections during the switch.

Infrastructure

Service	Resource	Region
Compute	EC2 t4g.micro (ARM)	ca-central-1
Database	RDS PostgreSQL (db.t4g.micro)	ca-central-1
Storage	S3	ca-central-1
Frontend	Amplify	ca-central-1
Cache	Valkey (in Docker)	ca-central-1

Cost

Running at approximately $35-38/month total AWS spend.