# chaitanyakrishnaeedara/event-booking-and-management-backend architecture

> Architecture diagram of the GitHub repository chaitanyakrishnaeedara/event-booking-and-management-backend, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-28). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/chaitanyakrishnaeedara/event-booking-and-management-backend
- Repository: https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend

## Overview

This Spring Boot application exposes event and booking REST APIs. Users can create, list, inspect, and delete events, book seats for an event, and retrieve bookings. Booking checks and reduces available seats before saving a booking; deleting an event first removes its bookings. The graph reflects the sampled controllers, services, repositories, and JPA entities. Database behavior is inferred from the Spring Data JPA repositories; application configuration was not sampled.

Main entry points: [`src/main/java/com/vcube/eventbooking/service/EventServiceImpl.java`](https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/service/EventServiceImpl.java) (Event Service), [`src/main/java/com/vcube/eventbooking/repo/BookingRepository.java`](https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/repo/BookingRepository.java) (Booking Repository), [`src/main/java/com/vcube/eventbooking/repo/EventRepository.java`](https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/repo/EventRepository.java) (Event Repository), [`src/main/java/com/vcube/eventbooking/controller/EventController.java`](https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/controller/EventController.java) (Event API)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_api["REST API"]
  node_event_api["Event API"]
  node_booking_api["Booking API"]
end

subgraph group_logic["Service Logic"]
  node_event_service["Event Service"]
  node_booking_service["Booking Service"]
end

subgraph group_persistence["Persistence"]
  node_event_repo["Event Repository"]
  node_booking_repo["Booking Repository"]
  node_event["Event<br/>[Event.java]"]
  node_booking["Booking<br/>[Booking.java]"]
  node_database[("JPA Database")]
end

node_user(("Client"))

node_user -->|"HTTP requests"| node_event_api
node_user -->|"HTTP requests"| node_booking_api
node_event_api -->|"delegates"| node_event_service
node_booking_api -->|"delegates"| node_booking_service
node_event_service -->|"loads events"| node_event_repo
node_event_service -->|"creates/deletes events"| node_event_repo
node_event_service -->|"saves bookings"| node_booking_repo
node_event_service -->|"deletes event bookings"| node_booking_repo
node_booking_service -->|"queries bookings"| node_booking_repo
node_event_repo -->|"persists events"| node_database
node_booking_repo -->|"persists bookings"| node_database
node_event_repo -->|"maps entity"| node_event
node_booking_repo -->|"maps entity"| node_booking
node_booking -->|"references"| node_event

click node_event_api "https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/controller/EventController.java"
click node_booking_api "https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/controller/BookingController.java"
click node_event_service "https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/service/EventServiceImpl.java"
click node_booking_service "https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/service/BookingServiceImpl.java"
click node_event_repo "https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/repo/EventRepository.java"
click node_booking_repo "https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/repo/BookingRepository.java"
click node_event "https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/model/Event.java"
click node_booking "https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/model/Booking.java"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_event_api,node_booking_api,node_user toneBlue
class node_event_service,node_booking_service toneAmber
class node_event_repo,node_booking_repo,node_event,node_booking,node_database toneMint
```

## Components

### REST API

- [Event API](https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/controller/EventController.java): `src/main/java/com/vcube/eventbooking/controller/EventController.java`
- [Booking API](https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/controller/BookingController.java): `src/main/java/com/vcube/eventbooking/controller/BookingController.java`

### Service Logic

- [Event Service](https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/service/EventServiceImpl.java): `src/main/java/com/vcube/eventbooking/service/EventServiceImpl.java`
- [Booking Service](https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/service/BookingServiceImpl.java): `src/main/java/com/vcube/eventbooking/service/BookingServiceImpl.java`

### Persistence

- [Event Repository](https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/repo/EventRepository.java): `src/main/java/com/vcube/eventbooking/repo/EventRepository.java`
- [Booking Repository](https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/repo/BookingRepository.java): `src/main/java/com/vcube/eventbooking/repo/BookingRepository.java`
- [Event](https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/model/Event.java): `src/main/java/com/vcube/eventbooking/model/Event.java`
- [Booking](https://github.com/chaitanyakrishnaeedara/event-booking-and-management-backend/blob/main/src/main/java/com/vcube/eventbooking/model/Booking.java): `src/main/java/com/vcube/eventbooking/model/Booking.java`
- **JPA Database**

### Other components

- **Client**

## Connections

- Client → Event API: HTTP requests
- Client → Booking API: HTTP requests
- Event API → Event Service: delegates
- Booking API → Booking Service: delegates
- Event Service → Event Repository: loads events
- Event Service → Event Repository: creates/deletes events
- Event Service → Booking Repository: saves bookings
- Event Service → Booking Repository: deletes event bookings
- Booking Service → Booking Repository: queries bookings
- Event Repository → JPA Database: persists events
- Booking Repository → JPA Database: persists bookings
- Event Repository → Event: maps entity
- Booking Repository → Booking: maps entity
- Booking → Event: references