Digging down a couple layers of links from this, the underlying paper, "Partial State in Dataflow-Based Materialized Views" https://jon.thesquareplanet.com/papers/phd-thesis.pdf is pretty intriguing. It sounds like a potential free lunch in specific performance areas, which means it also sounds too good to be true, but if it turns out to be a metaphorical 90%-off lunch that's still very promising.
Oh hey, that's my thesis! Happy to answer any questions you may have about it :) There's also the OSDI'18 paper here which may be of interest: https://jon.tsp.io/papers/osdi18-noria.pdf
I haven't read much about Noria other than this readme [0], but would like to know if you are familiar enough to contrast Materialize [1] with it in terms of perf, overhead, approach, and fundamental (design) principles?