A real-time pricing engine that transforms a bar menu into a simulated stock market.
Dynamic Drink Market (DDM) is an open-source system that simulates a stock market using a bar's menu.
Instead of trading stocks, customers "trade" drinks — and prices fluctuate dynamically based on demand in real time.
The more a drink is ordered, the higher its price rises. Drinks with lower demand decrease in price, creating a dynamic and interactive experience.
- Build a real-time dynamic pricing engine
- Simulate supply & demand behavior
- Create a gamified user experience
- Design a scalable and modular system
- Enable experimentation through open source
- Dynamic pricing based on demand
- Time-based demand tracking
- Market stabilization mechanisms
- Real-time updates
- Configurable system parameters
- A customer orders a drink
- The system records the order
- Demand metrics are updated
- Prices are recalculated
- Updated prices are reflected in real time
Technical documentation is available in the /docs directory:
| Document | Description | Location |
|---|---|---|
| System Overview | Problem, approach, system flow | docs/project/system-overview.md |
| Pricing Engine | Demand calculation, pricing formula | docs/project/pricing-engine.md |
| Data Model | Entities, relationships, data structures | docs/project/data-model.md |
| Tech Stack | Technology decisions, stack definition | docs/project/tech-stack.md |
- Bars & restaurants
- Coffee shops
- Events & festivals
- Interactive experiences
- Educational simulations
Concept / Early Development
🚧 Not yet implemented
This project is currently in the ideation phase.
Ideas, feedback, and discussions are welcome.
MIT (planned)
Inspired by real-world "stock market bars" where drink prices fluctuate based on demand.
The core challenge of this project is achieving:
Controlled chaos
- Too volatile → confusing
- Too stable → boring
The goal is to find the perfect balance between both.
If you're reading this in the future: yes, this is still a great idea. Build it.