EventSphere

Project highlights

• Concurrency-safe seat reservation workflow using Redis lock semantics.
• Role-aware access model for USER, ORGANIZER, and ADMIN capabilities.
• Dynamic event, venue, show, and seat-pricing management across multiple event categories.
• Payment simulation with booking rollback behavior for failed transactions.

What it is

EventSphere is a Spring Boot booking platform for movies, sports, and concerts built for high-concurrency reservation safety, role-aware operations, and production-style deployment workflows.

Problem it solves

Booking platforms frequently fail under concurrency with duplicate seat claims, weak authorization boundaries, and hard-to-monitor operations. EventSphere addresses this with Redis seat locking, transactional booking flows, and role-based access controls across user, organizer, and admin paths.

How it works

• Organize the system as a modular monolith with controller, service, and repository layers in Spring Boot.
• Store primary transactional state in JPA-managed entities with H2 for development and production-ready DB compatibility.
• Use Redis-backed distributed seat locks with expiration to prevent race conditions during checkout windows.
• Secure browser and API flows with a hybrid model: JWT cookie sessions for web UX and role-based guards for protected operations.
• Render user and admin interfaces with Thymeleaf plus HTMX while exposing operational observability through actuator endpoints.

Key capabilities

• Concurrency-safe seat reservation workflow using Redis lock semantics.
• Role-aware access model for USER, ORGANIZER, and ADMIN capabilities.
• Dynamic event, venue, show, and seat-pricing management across multiple event categories.
• Payment simulation with booking rollback behavior for failed transactions.
• Containerized deployment path with Docker Compose and CI-friendly structure.

Impact and outcomes

• Prevents duplicate seat assignment under concurrent booking attempts.
• Delivers an end-to-end booking backbone with admin analytics and operational monitoring hooks.
• Provides a migration-ready architecture that can evolve from modular monolith to service decomposition.