[bob1029]

Our request volume has a strict upper bound that we can depend on. The part of the user base touching JSON+SQL code paths is well-constrained.

For the most contentious area of our application - updating business state instance per user - We find that we are able to serve on the order of 1~10k requests per second. The size of these datasets is around 0.5~15 megabytes.

There isn't a whole lot of other magic involved. WAL is the most important thing for improving throughput.