Media Cache data: sequential or burst written?

I'm going to purchase a storage to be used as cache only, and I'm wondering what would make more sense: more focus on sequential write or burst write?

So in what "pattern" is the cache data written? Many small chunks all the time, or rather one big at once? How does Adobe exactly operate in this/handle it? And I'm well aware that it probably doesn't matter as much anyways, but I still want to know it, just out of pure curiosity. So thanks for all replies and answers