On: Discovering and exploring mmap using Go

[fnord123]

From the first paragraph:

> One of the main problems a database storage engine has to solve is how to deal with data in disk that is bigger than the available memory.

[fnord123 → fnord123]

I misread the comment. The file fits in address space? As sibling comment suggests, address space is v. big and it's very much a corner case (or very specific use case) for most people.