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Lwan is a high-performance web server with a low disk and memory footprint.
Lwan is a high-performance web server with a low disk and memory footprint.
Lwan Platforms
Linux
Lwan Overview
Lwan is a high-performance & scalable web server for glibc/Linux platforms.
In development for almost 4 years, Lwan was until now a personal research effort that focused mostly on building a solid infrastructure for a lightweight and speedy web server: * Low memory footprint (~500KiB for 10k idle connections) * Minimal memory allocations & copies * Minimal system calls * Hand-crafted HTTP request parser * Files are served using the most efficient way according to their size - No copies between kernel and userland for files larger than 16KiB - Smaller files are sent using vectored I/O of memory-mapped buffers - Header overhead is considered before compressing small files * Mostly wait-free multi-threaded design * Diminute code base with roughly 7200 lines of C code
Features
• Mustache templating engine • Used for directory listing & error messages • Available for user-built handlers • Easy to use API to create web applications or extend the web server • Supports rebimboca da parafuseta • Test suite written in Python tests the server as a black box • No-nonsense configuration file syntax • Supports a subset of HTTP/1.0 and HTTP/1.1 • systemd socket activation • IPv6 ready