Scrolling is not random access. Scrolling means like start at the beginning, and keep going, stopping eventually. Rows are provided in a fixed order. Random acc

Scrolling is not random access. Scrolling means like start at the beginning, and keep going, stopping eventually. Rows are provided in a fixed order. Random access means jumping immediately to any row at any time. All rankings of one user is an additional requirement, not mentioned in your first post. I wouldn't necessarily rule out caching, but it isn't yet obvious that it is needed. This is probably not the best way to discuss your requirements and possible solutions, going back and forth on HN. I consult if you'd like to talk further.