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backend/.env.example

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+# Server Configuration
+NODE_ENV=development
+PORT=3000
+API_PREFIX=/api
+
+# Database Configuration
+DB_HOST=localhost
+DB_PORT=3306
+DB_NAME=interview_quiz_db
+DB_USER=root
+DB_PASSWORD=your_password_here
+DB_DIALECT=mysql
+
+# Database Connection Pool
+DB_POOL_MAX=10
+DB_POOL_MIN=0
+DB_POOL_ACQUIRE=30000
+DB_POOL_IDLE=10000
+
+# JWT Configuration
+JWT_SECRET=your_generated_secret_key_here_change_in_production
+JWT_EXPIRE=24h
+
+# Rate Limiting
+RATE_LIMIT_WINDOW_MS=900000
+RATE_LIMIT_MAX_REQUESTS=100
+
+# CORS Configuration
+CORS_ORIGIN=http://localhost:4200
+
+# Guest Session Configuration
+GUEST_SESSION_EXPIRE_HOURS=24
+GUEST_MAX_QUIZZES=3
+
+# Logging
+LOG_LEVEL=debug
+
+# Redis Configuration (Optional - for caching)
+# REDIS_HOST=localhost
+# REDIS_PORT=6379
+# REDIS_PASSWORD=