HELP! * BLUE=global GREY=local Global HTML version of Foils prepared July 23,1995

Foil 127 WWW Client Server Relationship

From Full Relational Database HPDC-4 Presentation HPDC-4 Tutorial/CPS616 Spring95 -- August 1, Pentagon City Virginia. by Gang Cheng Marek Podgorny (Geoffrey Fox) * See also color IMAGE
Fill-out forms are currently used for the server to accept clients run-time input from a HTML page
Two different strategies for WWW client-server interactions:
  • Pre-edited HTML files (links) --- static and plain ASCII read-only files, identified by a file path; exist on disk; no need to process when used by the server (server performance is only determined by disk -> core memory I/O transfer)
  • CGI scripts --- programs (shell,perl,programming languages) to generate data (usually in HTML format) to be returned to the server (which will then be transferred to the requesting client in HTTP protocol); the resultant data are dynamically generated on the fly; pipes are used to feed the output (via STDOUT) to server; server performance is mostly determined by CPU processing)
Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

If you have any comments about this server, send e-mail to webmaster@npac.syr.edu.

Page produced by wwwfoil on Tue Feb 18 1997