Phil Eaton • 5/18/2026

Serving files over HTTP three ways: synchronous, epoll, and io_uring

This article provides a technical deep dive into implementing a file server over HTTP using three different IO methods: synchronous blocking IO, epoll-based event-driven IO, and the modern io_uring asynchronous IO. It includes shared code for socket listening, HTTP request parsing, MIME type mapping, and response formatting, then demonstrates how each method handles network and disk IO differently. The article is aimed at developers interested in systems programming, Linux IO models, and performance optimization.

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#c #http #Io_uring