This diagram shows the percentages of websites using the selected technologies. Kestrel used in a reverse proxy configuration.
Hosting An ASPNET Core Web App As A Windows Service In NET Core 3 so that it will automatically start on server restarts etc.
Kestrel web server vs iis. Kestrel can be used by itself or with a reverse proxy server such as Internet Information Services IIS Nginx or Apache. IIS has SSL certificates. It is run behind IIS using the HttpPlatformHandler.
The Kestrel web server is a new web server as part of ASPNET Core. It is intended to be used in production for ASPNET 5. This report shows the usage statistics of Apache vs.
Kestrel is considered a preferred web server for newer ASPNET applications see this post for a comparison to IIS and why you need both. It is now the. IIS web servers have HTTP access logs which is not the case in kestrel.
IIS allows port sharingmultiple apps running at the same time while kestrel doesnt. Better performance and memory utilization. Built to be very fast and it is Kestrel is built to be fast.
It is recommended that you run it behind a more fully featured webserver like IIS on Windows or NGNIX on Linux. But when I run my website I still get the IIS Express icon in the system tray. Comparison of both the servers IIS web server only supports Windows while kestrel web server supports all platforms.
Kestrel itself can be run from the command line but therein lies the issue where you often have to set up your application as a Windows Service More info here. Some features of Kestrel Kestrel does not support multiple applications sharing same port similar to IIS where applications are differentiated by host header value. In these cases you can do whats called a self contained deploy Which well talk about soon where the web app runs basically as an exe that you can double click and suddenly you have a fully fledged web server up and running and portable too.
Some of the most important things to know about Kestrel as a developer is that. It is not a fully featured web server. You can read the official benchmark here.
Just quickly anecdotally the management of IIS is much easier than managing a range of Kestrel web services. Programmatic port and TLS configuration. If deploying on Linux you should run a comparable reverse proxy server such as Apache or Nginx to proxy requests to Kestrel.
It is based on the libuv library the same one used by nodejs. All requests from IIS are actually passed one on one to the Kestrel web server hosted inside dotnetexe. Libuv supports an event-driven style of programming.
The ASPNET Core Module is a native IIS module that handles native IIS requests between IIS and the in-process IIS HTTP Server or Kestrel. Microsoft suggests you also use a full featured server and reverse proxy to Kestrel for most applications. Our reports are updated daily.
If you intend to deploy your application on a Windows server you should run IIS as a reverse proxy server that manages and proxies requests to Kestrel. I come from developing apps on IIS Express and hosting them on an IIS web server. A reverse proxy server receives HTTP requests from the network and forwards them to Kestrel.
One thing we learned is different is how IIS handles things. The request that reaches IIS on port 80443 is packaged up into an HTTPContext kind of object and passed on to Kestrel web server. It is designed to run behind a proxy like IIS on windows or NGINX on LinuxMacOS and should not be used to directly host ASPNET Core or any other application in production environments.
Definitely standalone Kestrel has much better performance than IIS when handling the high number of concurrent requests. Some of its core utilities include. With ASPNET Core I have a dependency on MicrosoftAspNetCoreServerKestrel and my startup has UseServerMicrosoftAspNetCoreServerKestrel.
Kestrel isnt a full-featured web server its a small fast web server geared toward serving dynamic content from ASPNET Core. When you use ASPNET MVC full framework with IIS it queues and handles your requests properly by default settings. See technologies overview for explanations on the methodologies used in the surveys.
Kestrel used as an edge Internet-facing web server. Kestrel has the following advantages over HTTPsys. Kestrel is cross platform runs in Windows LINUX and Mac.
Kestrel webserver supports SSL. Or you may have IIS but its not set up to host NET Core apps anyway. When tested on Windows Server 2012 against IIS and at a pipeline depth of 16 Kestrel pushed 1188521 requests per second compared to IIS 57792 requests per second.
Comparison of Kestrel Web Server Vs IIS IIS can perform anything which is required to run ASPNET Core application whereas Kestrel uses as little as required because of this Kestrel server execution is much faster than IIS. Agility its developed and patched independent of the OS. For more information see ASPNET Core Module.
Kestrel as web server on the web. IIS acts as a front end proxy to the backend Kestrel Console application that hosts theNET based Kestrel Web server. That is why this model is also called as Reverse proxy or Proxy hosting model.
How to read the diagram. When using ASPNET Core on Windows your most likely setup involves using IIS as a front end to the ASPNET Core Kestrel Web Server that actually runs your ASPNET Core application.