A scalable, real-time fantasy sports platform with automated scoring and rewards
A competitive fantasy sports platform where users:
✅ Create virtual teams from real-world players
✅ Compete in contests based on live match events
✅ Track real-time leaderboards with dynamic scoring
✅ Win rewards through transparent ranking systems
-
Team Builder
- Position-based selection with budget constraints
- Rule validation engine (composition limits, player eligibility)
- Saved team templates & performance history
-
Live Scoring System
- Event-driven score updates (every ball/play/minute)
- Multiplier logic (captain/vice-captain bonuses)
- Dispute resolution system for score corrections
-
Contest Engine
- Public/private contest creation
- Automated prize distribution
- Waitlist management & contest merging
-
User System
- Wallet integration (deposits/withdrawals)
- KYC verification pipeline
- Activity feed & achievement badges
Frontend
- React.js + TypeScript
- WebSocket client for real-time updates
- Chart.js for performance analytics
Backend
- Spring Boot (Java) & Node.js microservices
- PostgreSQL + Redis (caching)
- Kafka for event streaming
- Elasticsearch for player/search
Infra
- Docker + Kubernetes
- AWS EC2/EKS
- Prometheus + Grafana monitoring
┌─────────────┐ ┌──────────────┐ ┌─────────────┐
│ React │◄───►│ API Gateway │◄───►│ User Mgmt │
│ Frontend │ │ (Rate Limit, │ │ Service │
└─────────────┘ │ Auth) │ └─────────────┘
▲ ▲ ▲
┌───────────────┘ │ └───────────────┐
┌───────▼──────┐ ┌───────▼──────┐ ┌────────▼────────┐
│ Contest │ │ Team │ │ Scoring │
│ Service │ │ Service │ │ Engine │
└───────┬───────┘ └───────┬──────┘ └────────┬────────┘
│ │ │
┌───────▼───────────────────▼──────────┬───────▼────────┐
│ PostgreSQL │ Redis │
│ (Main Database) │ (Caching) │
└──────────────────────────────────────┴────────────────┘
- Clone repo:
git clone https://github.com/yourusername/fantasy-platform.git
cd fantasy-platform- Configure environment:
cp .env.example .env
# Set values in .env for:
# - Database credentials
# - JWT secret key
# - Payment gateway keys - Start services:
# Backend
mvn clean install
docker-compose up -d
# Frontend
cd frontend
npm install
npm run dev| Service | Endpoint | HTTP Method | Links to Smart Contract? | Contract Function (Cairo) |
|---|---|---|---|---|
| Auth | /auth/nonce |
POST | ❌ No | - |
/auth/verify |
POST | ❌ No | - | |
| Contest | /contests |
GET | ❌ No | - |
/contests |
POST | ❌ No (Admin-only setup) | - | |
/contests/:id/join |
POST | ✅ Yes | PrizePool.lock_entry_fee* |
|
| Team | /teams |
POST | ✅ Yes | TeamValidation.validate_team |
/teams/:userId |
GET | ❌ No | - | |
| Scoring | /scores/live |
GET (WS) | ❌ No (Uses Redis cache) | - |
/scores/sync |
POST | ✅ Yes (Indirect via workers) | ScoringEngine.update_score |
| Contract | Function | Called By | Linked API Endpoint(s) |
|---|---|---|---|
| TeamValidation | validate_team |
Team Service (on team submission) | POST /teams |
| ScoringEngine | update_score |
Python Data Worker (via RabbitMQ) | POST /scores/sync (indirect trigger) |
| PrizePool | lock_entry_fee* |
Contest Service (on contest join) | POST /contests/:id/join |
distribute_prizes |
Backend (automated payout trigger) | Internal process (no direct API link) |
-
Team Submission
POST /teams→ CallsTeamValidation.validate_teamto verify team rules on-chain.
-
Contest Join
POST /contests/:id/join→ Interacts withPrizePool.lock_entry_fee(hypothetical function) to lock entry fees in escrow.
-
Live Scoring
POST /scores/sync→ Python worker processes data and triggersScoringEngine.update_scorevia RabbitMQ.
-
Payout Automation
- Backend triggers
PrizePool.distribute_prizesafter match ends (no direct API endpoint).
- Backend triggers
- The
PrizePool.lock_entry_feefunction is implied in the workflow (not explicitly shown in the Cairo example) but would handle fee locking. PrizePool.distribute_prizesis called internally after Chainlink confirms match results.- WebSocket (
/scores/live) reflects data updated byScoringEnginecontract but doesn’t directly invoke it.
This mapping ensures on-chain validation for critical actions (team submission, prize distribution) while keeping non-critical paths (auth, data fetching) off-chain for speed.
MIT License - See LICENSE for details.
🏆 Start building your fantasy sports empire today!