Yeah, I should benchmark streams. In my experience streams are rarely faster, though, and are instead something you should reach for if 1) you can't fit the fil

Yeah, I should benchmark streams. In my experience streams are rarely faster, though, and are instead something you should reach for if 1) you can't fit the file in memory or 2) you might stop the enumeration early. Regarding GenServer, I'm not so sure about that. I suppose I should benchmark it, but intuitively I expect ETS to be better here. There's more overhead in getting the data, but it allows you to concurrently read it from different processes. A GenServer, meanwhile, could respond to a given message faster, but now you're serializing the (e.g.) 50 concurrent virtual users through a single bottleneck. I could have multiple copies of the data in several GenServers, I suppose, at the expense of much more memory use.