Selected Java Interview Questions

Mar 25, 2021 · Backend Development

Understanding Zero-Copy in Java: NIO, MappedByteBuffer, DirectByteBuffer, and Netty

This article explains the concept of zero‑copy, its performance benefits, and how Java NIO, memory‑mapped buffers, direct buffers, channel‑to‑channel transfers, and Netty’s composite buffers implement zero‑copy to reduce data copying between kernel and user space.