LwanWhat is Lwan?
In development for almost 3 years, Lwan was until now a personal research effort that focused mostly on building a solid infrastructure for a lightweight and speedy web server.
Lwan is a tool in the Platform as a Service category of a tech stack.
Key Features
Low memory footprint (~500KiB for 10k idle connections)Minimal memory allocations & copiesMinimal system callsHand-crafted HTTP request parserStatic file serving uses the most efficient way according to file sizeNo copies between kernel and userland for files larger than 16KiBSmaller files are sent using vectored I/OHeader overhead is considered before considering deflate compressionMostly wait-free multi-threaded designOne thread accepts connections, one I/O thread per logical CPU handles themHand-crafted coroutines makes asynchronous I/O a breeze in CLinux only, as it relies on epoll()Purpose-built I/O loopEfficient loading cache used forDirectory listingFile information (size, last modified date, MIME type, etc)Compressed filesDiminute codebase with roughly 7200 lines of C code
Lwan Pros & Cons
Pros of Lwan
- ✓C and Lua Scripting
- ✓Free
- ✓High-performance http server
- ✓Performance
Cons of Lwan
No cons listed yet.
Lwan Alternatives & Comparisons
What are some alternatives to Lwan?
NGINX
nginx [engine x] is an HTTP and reverse proxy server, as well as a mail proxy server, written by Igor Sysoev. According to Netcraft nginx served or proxied 30.46% of the top million busiest sites in Jan 2018.
Apache HTTP Server
The Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server. Originally designed as a replacement for the NCSA HTTP Server, it has grown to be the most popular web server on the Internet.
Apache Tomcat
Apache Tomcat powers numerous large-scale, mission-critical web applications across a diverse range of industries and organizations.
Microsoft IIS
Internet Information Services (IIS) for Windows Server is a flexible, secure and manageable Web server for hosting anything on the Web. From media streaming to web applications, IIS's scalable and open architecture is ready to handle the most demanding tasks.
