@misc{fry99b,
title = {Editing the Web: Detecting the Lost Update Problem
Using Unreserved Checkout},
author = {Henrik {Frystyk Nielsen} and Daniel LaLiberte},
howpublished = {World Wide Web Consortium Note},
month = {May},
year = {1999},
description = {My Master Thesis bibliography},
abstract = {Avoiding the lost update problem has been a notorious
challenge when editing documents remotely on the Web
using HTTP/1.0. While WebDAV provides an extended set
of services for editing the Web, HTTP/1.1 provides a
minimal set of hooks for avoiding the lost problem by
detecting when versions have changed so that changes
aren't lost in the editing process. While simple, these
hooks are fundamental to editing the Web using HTTP/1.1
and are needed in Webdav as well. This Note explains a)
how to use HTTP/1.1 to detect the lost update problem
using preconditions and strong etags and b) how to
avoid problems with HTTP/1.0 clients that do not know
about these features but only use plain HTTP PUT
requests. Neither a) nor b) requires any changes to
HTTP/1.1, but can be achieved using existing features.
The mechanism has been implemented in Web Commander and
Amaya (both using libwww), and Jigsaw --- all W3C Open
Source software freely available to all interested
parties. Detection is only one of several ways to avoid
the lost update problem and this document discusses the
pros and cons of various other mechanisms including
exclusive locks and immutable revisions.},
uri = {http://www.w3.org/1999/04/Editing/01}, topic = {webdav[0.8]},
keywords = {imported }
}
::