Lesson plan

Mod lisp

mod_lisp is an extension module for the Apache HTTP Server. It enables Apache to interface with application servers written in Common Lisp, making it possible to dynamically generate web pages and provide web applications with Common Lisp programs. Unlike other projects, such as mod_perl and mod_python, mod_lisp does not embed a Common Lisp interpreter in Apache. In concept it is closer to FastCGI, handling requests by serializing them into a textual representation and sending that over a socket to a persistent Common Lisp program, and then sending the Common Lisp system's response to a client. The client may be a web browser, but is more likely to be a reverse proxy server. It is this server that interacts with the user's browser. The source (FreeBSD style license), Common Lisp examples and pre-compiled binaries for FreeBSD, Linux and Win32 are available on the mod_lisp web site.

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Article summary

mod_lisp is an extension module for the Apache HTTP Server. It enables Apache to interface with application servers written in Common Lisp, making it possible to dynamically generate web pages and provide web applications with Common Lisp programs. Unlike other projects, such as mod_perl and mod_python, mod_lisp does not embed a Common Lisp interpreter in Apache. In concept it is closer to FastCGI, handling requests by serializing them into a textual representation and sending that over a socket to a persistent Common Lisp program, and then sending the Common Lisp system's response to a client. The client may be a web browser, but is more likely to be a reverse proxy server. It is this server that interacts with the user's browser. The source (FreeBSD style license), Common Lisp examples and pre-compiled binaries for FreeBSD, Linux and Win32 are available on the mod_lisp web site.

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Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

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Key claims and bibliography are generated from the same tracked claims and sources as the article page.