At Google scale it matters, sure. But most companies aren't Google scale. Writing your single-company 100-user CRUD webapp in Java or C++ "for performance" is the ultimate false economy.
/I used to work for a company that had a big Java app. We laughed at our client who needed 60 Rails servers to deliver worse performance than our single-instance app. But they probably saved more on dev costs than they spent on servers.
/I used to work for a company that had a big Java app. We laughed at our client who needed 60 Rails servers to deliver worse performance than our single-instance app. But they probably saved more on dev costs than they spent on servers.