Yeah, Matt Dillon is up there with John Carmack for me in terms of programming masters. He pumps out a lot of high-quality code.
I think the same about Poul Henning Kamp. I feel I read his name in every module in FreeBSD. Jails, GEOM and so on. And Varnish is a fantastic well though product from him.
The architectural difference of how data is stored between Redis and Varnish is very interesting to read about. And I think it tells us why that Redis performs better on Linux and Varnish performs better on FreeBSD.
If one of those developers is Matt Dillon low numbers are rarely a hinderance. He turns out an awful lot of superb quality code, ever since the days of DICE on the Amiga. That ended up generating faster code than either of the "professional" offerings, including Lattice. Lattice C on MSDOS later became the first two versions of Microsoft C.
One of the people I respect most in this industry.