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Asked: 2026-05-13T21:01:52+00:00

I’m in the process of planning a web service, which will be written in

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I’m in the process of planning a web service, which will be written in C++. The goal is to be able to select more or less any web server to drive the service. For this to become true, I obviously have to choose a standardized interface between web servers and applications.

Well known methods that I’ve heard of are:

  • CGI
  • FastCGI
  • WSGI

Now, as I have absolutely no experience on using those interfaces, I don’t really know what to choose. I do have some requirements though.

  • needs to be reasonably fast (from what I’ve heard of, this pretty much rules out CGI)
  • should be easily usable in a pure C/C++ environment (e.g. there should be libraries available)
  • must provide support for HTTP 1.1 (dunno if that matters)

Thanks for any suggestions 🙂

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1 Answer

  1. Editorial Team

    WSGI is for Python apps; if your language is C++ this isn’t an option.

    FCGI is a good way to go. An FCGI can be invoked as a standard CGI, convenient for debugging and testing, then run as an FCGI in production.

    Performance of CGI vs. FCGI depends a lot on what you’re trying to do and the amount of traffic you expect. Tasks that have a lot of startup overhead benefit most from FCGI; the FCGI controller can be configured to spawn additional processes to handle heavy loads.

    Practically any web server will run CGI with minimal configuration; you’ll likely need an additional module to run FCGI but that depends on the web server.

    http://en.wikipedia.org/wiki/FastCGI

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