Harbor

• a healthcare clinical event platform
• in English: code that lets hospital computers talk to each other so they can get patient data
• named after the seventh track on Clairo's 2021 album Sling

Tech stack

• Java to write the backend services
  • Patient Service knows about patients
  • Device Service knows about medical devices
  • Observation Service knows about blood pressure, heart rate, temperature, etc.
  • Notification Service sends alerts
• Spring Boot to make those Java services easy to build
• Apache Kafka to let those services talk to each other
• PostgreSQL to permanently remember healthcare data, which is important
• Redis to temporarily remember things that are needed often, so the programs respond faster
• Docker to pakcage each service so it runs the same everywhere
• Kubernetes to keep all those Docker containers running together
• GitHub Actions to automatically test and deploy new code

Mental model

Java
  ↓
Spring Boot
  ↓
Backend Services
  ↓
        Kafka
      ↙   ↓   ↘
Patient  Device  Notification
   │        │         │
   └────────┴─────────┘
          │
     PostgreSQL
          ▲
        Redis

Docker packages everything
Kubernetes runs everything
GitHub Actions ships everything