Java Captain

May 24, 2019 · Backend Development

Understanding Java Blocking I/O, NIO, and AIO: From Per‑Connection Threads to Multiplexed and Asynchronous I/O

This article explains how traditional per‑connection thread handling (blocking I/O) wastes resources, then demonstrates Java NIO multiplexing and AIO callbacks with complete code examples, showing how they reduce thread usage and eliminate blocking while processing many simultaneous socket connections.