Ok first of all, keep in mind that all of your windows share the same cookie cache within the same browser, so technically all of these Windows are accessing the same exact session. Because of this, you’re likely confusing the back-end as to what the actual state of the front-end is supposed to be.
If you want to do something like this, I suggest using multiple browsers. If you need more, use virtual machines through Parallels, VMWare or VirtualBox.
I don’t use Xojo Cloud services, but we do test our server farm with a specially crafted Linux server running 50 VirtualBox containers with Linux and Windows instances. in each instance, we kick off each of that platform’s supported browser and that gives us around 170 connections to our web services - JS, PHP, Xojo, scripted CGI, and compiled tools.
That costs nothing but a machine powerful enough to run the sessions (we use a dual processor Xeon system with 64GB of RAM) and some time to configure things.
That’s an interesting test. Given the above, I wonder if you find that things don’t stall out in the same way if you use multiple browsers in a similar usage scenario (like Safari/Firefox/Chrome/Edge/etc)- rather than multiple tabs.
A few years ago i did test this and then i reported that this is a limitation of the browser. In my tests Safari was the first to stall with 5 to 6 tabs, FF could handle about 7 sometimes 8. However if you use seperate windows then you will see that the limit is per tab and not per window, every window then could handle about the same number of tabs, Safari every new window could handle about 5 sessions in different tabs and FF about 7.
In my case the server did accept and handle much more sessions than i could start in ca 5 different browsers all together.
Among those browsers were Safari, FF, IE, Chrome and Opera.
The best browser for handling many pictures (photo’s) upto about 750 was IE, even with that number of pictures in 5 scrolling container controls moving/scrolling still was in iE smooth while all others were stumbling from one picture to the next. Loading times however was in all browsers, as to be expected, extremely slow.
Just to help with the testing, some browsers (FF and Chrome, at least) allow to do “private browsing” (or “incognito mode”) and I BELIEVE any new private window is independent of the previously open ones, though I must admit I know next to nothing about how the web works.
For example you can login to different outlook/hotmail accounts simultaneously using private browsing, which is not possible otherwise.