10000 nodes and beyond with Akka Cluster and Rapid
Update: there’s a podcast episode about this The year is 2021. As the world is still deeply affected by the COVID-19 pandemic, the United Nations have decided that in order to prevent the same scenario of ever happening again, there should be a worldwide, real-time contact-tracing system in place capable of tracking every human being on the planet. Everyone is now equipped with a small, pebble-like device. If a person you have been in contact with is confirmed to carry a new kind of virus for which there is no remedy, the device starts glowing in red. Each device reports the anonymized contact information to one global backend system capable of handling this type of massive scale.