The text discusses the importance of data integrity in real-time update systems. It explains that maintaining data integrity is crucial for ensuring an effective user experience, especially in scenarios where real-time updates are essential. Examples include financial trading platforms, sports apps, e-commerce websites, and ride-sharing applications. The article also highlights the challenges involved in scaling up real-time update systems while guaranteeing data integrity. It suggests that a well-designed system should ensure message order, delivery precision, and consistency even during network disruptions.