[anonbystander]

Totally agree with doing your own benchmark, and when performance matters, work with someone who knows the systems

I'm not a neo4j expert, and am not paid to write this. That said, their GDS subengine from the last couple of years appears to be distributed in-memory, essentially a view, and their year-over-year improvements there have been substantial. There might be no difference at the checkbox level. Likewise, when we did billion-scale work here with a variety of common queries, we found that the existence of basic features like indexes quickly changed what was fast vs slow. Historically, C++ vs Java is often < 2X of a difference, so when we're talking parallel & distributed hardware with tricky query planners & data representations... I have many questions beyond the language. If they were targeting something like FPGAs, I might feel differently.