The problem is to write a reliable file database. Firefox got a lot of bugs related to history file corruption until it was replaced with SQLite. The same stor

The problem is to write a reliable file database. Firefox got a lot of bugs related to history file corruption until it was replaced with SQLite. The same story was with Subversion where they replaced Berkeley key DB due to reliability issues. This reliability comes from a very deep knowledge of OS API and all their corner cases. Creating a programming language typically involves less corner cases and the bugs in the compiler/runtime are much simple to reproduce (again, typically).