Tell me about an interesting case of solving a complex problem on a project.

On one of the frontend projects, there was a task to implement a complex interactive chart with a large amount of data and real-time dynamic updates. The main challenge was performance and smooth animations during data updates.

Solution:

• Used the D3.js library for charting, as it is flexible and allows fine control over visualization.
• To optimize performance, applied data virtualization — displaying only the visible part of the chart and loading other data as needed during scrolling.
• Used requestAnimationFrame for smooth animations and to minimize load on the main thread.
• Separated data update logic from rendering to avoid unnecessary re-rendering.

As a result, achieved a smooth and responsive interface that correctly displayed large volumes of data and updated in real-time without delays.