This is definitely more of a general AJAX topic than a JQuery question
per se. What are some strategies for avoiding concurrency errors when
updating a database through AJAX? That is, what are some ways to
prevent a given user from modifying the same row in a database with
simultaneous requests (say, that he updates one column with an AJAX
call, then immediately submits a form that updates the same row). How
have other people solved this problem? Is the best option to make the
AJAX call synchronous?
