Which tool did you use for Virtual Scroll — did you write it yourself or use a ready-made solution?

To implement Virtual Scroll, ready-made solutions from popular UI libraries such as React Window or Angular CDK Virtual Scroll are most often used. This allows for quick and efficient handling of large lists without loss of performance. In some cases, if the requirements are unique, a custom virtual scroll component is written, but this requires a deep understanding of the rendering mechanism and optimization.