Perl is just the the built process of the bundle. Lua is the programming language inside Nginx.
Tir looks nice too. It is more targeted at websocket type applications, although it is general purpose too. Nginx supports more traditional HTTP models, I dont know of any native websocket support for it, but you can of course use it to proxy to mongrel/node or whatever. Nginx has the maturity advantage, and you can use it as a proxy, load balancer, and so on. With the Lua support and these additional modules that taobao developed you get a full environment all in one place.
Tir looks nice too. It is more targeted at websocket type applications, although it is general purpose too. Nginx supports more traditional HTTP models, I dont know of any native websocket support for it, but you can of course use it to proxy to mongrel/node or whatever. Nginx has the maturity advantage, and you can use it as a proxy, load balancer, and so on. With the Lua support and these additional modules that taobao developed you get a full environment all in one place.