In the last few weeks we’ve worked with several customers who all experienced similar issues with their site under load: users were reporting that data they entered in to form fields was “disappearing” and that they were being asked to re-enter it a second time.
While no two websites are exactly the same, we were surprised to see that in each of these cases the same root issue was to blame. Specifically, these sites all used advanced AJAX techniques to make parts of a form dynamically change based on the values selected by the user earlier in the form.
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