SeekStorm does currently not use io_uring, but it is on our roadmap. Challenges are the cross-platform compatibility. Linux (io_uring) and Windows (IoRing) use different implementations, and other OS don't support it. There is no abstraction layer over those implementations in Rust, so we are on our own.

It would increase concurrent read and write speed (index loading, searching) by removing the need to lock seek and read/write.

But I would expect that the mmap implementations do already use io_uring / IoRing.

Yes, lazy loading would be possible, but pure RAM access does not offer enough benefits to justify the effort to replicate much of the memory mapping.