Nginx VS YARP

Yeah, unless I'm looking at it wrong, there doesn't seem to be any meaningful difference between 1.25.5 and 1.26.0:

https://github.com/nginx/nginx/compare/release-1.25.5...rele...

However, it's very unlikely that .NET developers will directly expose their Kestrel-based web apps to the internet. Typically, we use other popular web servers like Nginx, Traefik, and Caddy to act as a reverse-proxy in front of Kestrel for various reasons:

> I actually don't understand why I am seeing arguments like this all the time.

Have a look at:

https://github.com/nginx/nginx/blob/master/src/http/modules/...

It's got the whole checklist: nginx idiosyncratic module system, inline parsing, custom utf conversion, buffer preallocation and adjustments, linked lists, comments about side effects of custom allocator, and probably other things.

It's not easy to deal with source like that and any serious improvement to that area would effectively be a rewrite anyway.

Since anything doing work in nginx is a module anyway, it wouldn't even have to be a full rewrite in one go.

According to this article, nGinx is being used to serve 34% of all websites in the world. I checked out who's contributing to nGinx, and just like I thought, the project has 8,208 commits, and 5,366 of those commits was made by 2 software developers; igorsoev and mdounin.

Nginx + Roadrunner (fcgi mode)

Apache’s mod_fastcgi’s last commit was 2 weeks ago:

https://svn.apache.org/viewvc/httpd/httpd/trunk/

It’s a fork of what you linked (and was more popular afaik back when fastcgi was state of the art, and apache was the undisputed champion of web servers).

These days, nginx has more market share than apache, and its fastcgi module is one of the more recently updated ones in its source tree (5 months vs multiple years):

https://github.com/nginx/nginx/tree/master/src/http/modules

If I was going to build an embedded web server, I’d start with nostd rust, probably with though axum + tokio, since thats already memory safe-ish.

If I needed fastcgi for some reason (dynamically loadable endpoints, or os-level isolation), there are at least four implementations of fastcgi for it. No idea if any are decent though.

APISIX is an API Gateway. It builds upon OpenResty, a Lua layer built on top of the famous nginx reverse-proxy. APISIX adds abstractions to the mix, e.g., Route, Service, Upstream, and offers a plugin-based architecture.

Adding to the other answers here, you might find some useful functionality in YARP if you want a pure .NET reverse proxy. Like Kestrel, Microsoft dogfoods YARP in Azure.

➡️ Release 2.0.0-RC.1 · microsoft/reverse-proxy · GitHub ➡️ Visual Studio 2022 17.5 Preview 3 is here!

In your application, you may be using YARP, to build a reverse proxy gateway sitting in front of various backend applications. For example, you may run YARP to listen on example.org, and have it proxy all requests going to this domain while mapping /api and /docs to different web apps running on diffreent servers.

Microsoft already made YARP for their Azure infrastructure, it's a "build your own reverse proxy" kit.

If I was to need one I would probably reach for YARP (Yet Another Reverse Proxy) from MS. https://microsoft.github.io/reverse-proxy/

Microsoft's YARP is exactly this.