I'm building an attributes store for storing aggregated attribute values to be used for segmentation and targeting. I'm wondering if anyone has any suggestions for the storage of such a model.

I've been reading the following: -https://en.wikipedia.org/wiki/Entity%E2%80%93attribute%E2%80%93value_model - https://inviqa.com/blog/understanding-eav-data-model-and-when-use-it

but wanted to get a sense of real world usage and what storage has been used.