Without knowing the order of magnitude of the size of your data, its "shape" (is it a fixed layout, is it different per write?), as well as the perf requirement

Without knowing the order of magnitude of the size of your data, its "shape" (is it a fixed layout, is it different per write?), as well as the perf requirements you mention (how many simultaneous reads and how much is being read each time, and what does "real time" mean to you) it's really hard to make a recommendation.