We're planning to do a larger tech focused write-up on this infographic soon. On the backend it's powered by Node and Redis and runs within an EC2 auto scaling group.
Let me know if I can elaborate on any of the tech behind this visualization.
Let me know if I can elaborate on any of the tech behind this visualization.
Also if you look at big cities (LA, NYC, SF) you'll see a continuous stream of circles flashing without lines. So the data just overlaps a lot.