At a certain mobile security shop ;) there was a push service rollout, back in 2013, and it was basically pings over the network, and mailboxes in Cassandra, no

At a certain mobile security shop ;) there was a push service rollout, back in 2013, and it was basically pings over the network, and mailboxes in Cassandra, no Redis layer atop. The volume was much smaller (~1hz), so it's interesting to see how the ecosystem has evolved, and how the volume requirements change the shape of the system