[R] stateful computation for web-based R across HTTP requests

From: Hseu-Ming Chen <hseuming_at_gmail.com>
Date: Tue, 27 May 2008 18:26:17 -0400

A friend just introduced me to R today and I think it is really nice after browsing its web site. I'm eager to cook up some web-based interface to use R at work for more platform-independent access. I plan to implement it in a Python-based framework such as TurboGears or Django on either FreeBSD or Linux platform. My question is: how do i maintain stateful computations across sessions, namely HTTP requests? I mean, if needed, I would like to be able to retain the "environment" (all pertinent data, variables, previously calculated results, etc.) from earlier web requests in the interpreter engine? I'm not sure what it is called in the R Project but i would imagine the word connection/session/stateful is probably there.

Or should I use RWEB instead? If so, how do i maintain the stateful computation across HTTP sessions? i don't want to re-invent the wheel.

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