How can I scale out the snuba?!

So, fpacifici suggested two solutions, but I have a question.

First, the first solution is judged by increasing the process within snuba.
I understood that even if events are generated on only one partition per topic, if snuba’s process grows, it can handle write speeds in parallel. Is that right?
If so, can you give me information about the environment variables that can be used when launching the snuba container? I don’t know where the “processes” “input-block-size”, “output-block-size” are.

Also, even if I can increase snuba’s process on one node, I think running more than one snuba node guarantees HA. (Of course, only one snuba is assigned and the other snuba can be in hotstandby state)
So, I would like to know in more detail the solution that you presented second. Even if the contents are partitioned with an environment variable, parallel consumption is not possible, but it seems that it is possible with a direct partitioning method. Is it correct? Could you please explain in more detail. Thank you.