NOTE

3.2 Multithreaded Server Implemented with BIO

Traditional server-side programming with BIO and its blocking points.

JavaCreated 01/17/2020Updated 01/17/20201 min readhistorical

This is a historical learning note and may contain outdated or incomplete understanding.

Traditionally, server-side programming uses BIO.

However, this approach has two blocking points: ServerSocket.accept() and InputStream.read(). Therefore, a single thread can serve only one client.

To serve multiple users, multiple threads must be used to process read requests, but thread resources are limited.

Especially for long-lived connections, maintaining so many long-lived connections consumes too many server resources because thread resources remain occupied.

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