No results from small web on "rust cow" (or "rust cow blog" for that matter):
However, full web search for "rust cow blog" returns those on the front page:
https://www.thealphadev.com/2024/01/moo-ving-data-efficiently-exploring.html
(I suppose the blog linked on that Reddit is "small web" too)
https://thork.net/posts/2020_cows_in_the_wild/
https://bytegoblin.io/blog/an-introduction-to-cow-in-rust.mdx
I'd prefer to see those blog results in the "small web" lens too.
