Tell about the most complex or interesting task in StormTrade. What was the domain responsibility of the trading core?

The most challenging task in StormTrade was implementing the trading core responsible for processing and executing orders in real-time with high performance and reliability.

The domain responsibilities of the trading core included:

• Receiving and validating orders from users
• Managing the state of orders (active, executed, canceled)
• Ensuring data consistency when multiple clients operate simultaneously
• Calculating and applying trading strategies and rules
• Integrating with external exchanges and liquidity systems

To solve these tasks, CQRS and Event Sourcing patterns were used, which allowed for effective system scaling and data reliability.