I have used Rust a little, but this book was most useful to me when I was working on a concurrent data structure for an old C program. It’s a very good book for anyone writing low-level multi-threaded code in C or C++ as well as Rust, because they have basically the same primitives.

The only places I know where it isn’t applicable are the Linux kernel and Java, because their memory models and concurrency primitives predate and significantly differ from the Rust/C++/C models.

For the Linux memory model, there is Paul McKenney’s free book, “is parallel programming hard, and if so, what can you do about it?” https://cdn.kernel.org/pub/linux/kernel/people/paulmck/perfb...