I’ve been working on a site with Google App Engine over the past few months, and I didn’t have to worry about people adding new data or breaking users when the site went down because I had very few users, but I'm now planning to move the site for many people.
The site includes users who post topics, and generally, when I make changes to the site, I need to have some database entries for it to work. I was wondering what constitutes the most professional and efficient way to develop a website during its production, and not to lose user data or significantly reduce the level of user experience.
Which would be ideal if I could share something like 10% of the traffic on the new site that I am testing, but I did not find anything like it in GAE.
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