Whenever I see these new DBs I promise myself to try them in a side-project but I almost never get around to thinking of one. Can someone be kind enough to hit up a few ideas for side-project where this DB would shine?
I wouldn't say InfluxDB (or Graphite, or whatever) is something you'd develop a side project around (though you could probably implement some novel data visualization), but rather, they provide a backend for your side projects to collectively aggregate metrics.