For same process + core + hot cache & pipeline, your upper bound is something like 1,000,000x faster than a trip within the same datacenter. This intuition is

For same process + core + hot cache & pipeline, your upper bound is something like 1,000,000x faster than a trip within the same datacenter. This intuition is what encouraged us to run with SQLite in production back when most developers didn't think it was a good idea.