In this page they have "space filling curves" as an example in one of the images, but I haven't been able to find production systems that actually use space filling curves for similarity search. Anyone have any tips?
Old-school Postgres extensions for GIS would be an example. They aren’t used much anymore, but I felt like they deserve a place in history :)
PS: Love your blog! I have worked on SFCs in the past. Did you?
I've been looking for good examples for my next book, but everything I've read about has turned out to be not used, including everything in Michael Bader's book [1], except for S2Geometry [2], but I feel like I need to talk to someone who has more expertise in the benefits/drawbacks of using that in an actual product.
[1]: https://www.google.com/books/edition/Space_Filling_Curves/zm... [2]: https://github.com/google/s2geometry