Elevator System

Technologies used

Frontend

• React
• TypeScript
• Redux Toolkit is used for state management
• MUI is as component library
• React Router
• React Stomp hooks is used to manage Websockets connection.

Backend

• Spring Boot 3
• Spring Data JPA
• Spring Modulith
  • String Modulith is used to isolate the event log and elevator modules from each other.
• STOMP Over WebSocket
  • Article on this topic
• PostgreSQL
• Flyway, MapStruct, Lombok, TestContainers, Junit and more

Authentication and Authorization (Work in progress)

• AWS Cognito
• Spring Security

Infrastructure

• AWS CDK

Elevator Database Schema

General Working

Features

• Up/Down Buttons: Users can request the elevator by pressing up or down buttons on each floor.
• Inside Control Panel: Allows passengers to select their destination floor.
• Floor Request Handling:
  • Keeps track of all floor requests and processes them in an optimized order.
  • Determines the best order for servicing requests.
  • Prioritize requests based on direction, current elevator location, and other factors.
• Admin view
  • Allows Admin to view all required info at 1 place
  • Event logs
  • Floor stops

Video

Example with 1 Lift

one_lift.mp4

Example with 2 Lift

two_lift.mp4

General flow description

• Typically, interactions between the front-end and back-end are handled through a RESTful API.
• However, for actions related to the elevator, an asynchronous event-driven approach is employed.
  • This approach enables real-time updates on the elevator's status.