Comment by pkolaczk

> In any case, the programming language should have little to no impact on the database performance, since the majority of the time is spent waiting on io anyway

That was true maybe 30 years ago with spinning disks and 100 mbit ethernet. Currently, with storage easily approaching speeds of 10 GB/s and networks at 25+ Gbit/s it is quite hard to saturate local I/O in a database system. Like, you need not just a fast language (C, C++, Rust) but also be very smart about how you write code.