3 ms·

Java seems to have done pretty well, and it didn't have broad stdlib support for asynchronous I/O until a few years ago.

• pjmlp 7y ago
  NIO was introduced in Java 1.3.
  • jnordwick 7y ago
    That's non blocking, not async as in the async that rust is developing.
    • pjmlp 7y ago
      Non blocking code is asynchronous by definition, regardless of the syntax sugar.