Indeed. The Redis book was C/C++ so I was hopeful that this one would be as well. Given that database essentials are so closely tied to system calls, I would have hoped for a language that doesn't abstract them away. At least in the first fsync() call, the author does explicitly mention that `fp.Sync()` ends up invoking `fsync` system call, but as someone who has no intention of returning to Golang I'd rather not have to add complexity by requiring me to build and maintain a mental map of Golang calls to syscalls (the worst kind of abstraction layer IMHO: leaky and unnecesary).