I'd be curious to know the root cause(s) of their outages. I presume they're using Kafka as an event bus, based on their Faust library[1]:

  Faust is a stream processing library, porting the ideas 
  from Kafka Streams to Python.

  It is used at Robinhood to build high performance distributed systems and 
  real-time data pipelines that process billions of events every day.

I did some evaluation of various Kafka ingestion methods a while back (including Faust), and didn't find Python to be a great fit, so I'd be curious to know if that has anything to do with it.

[1] https://faust.readthedocs.io/en/latest/