Hello,
There is not any specific limitation on the number of concurrent sessions as there is nothing stated in the official documentation pages. It mainly depends on the recourses that your server has. For example if your CPU is not powerful or your RAM is small, then it will definitely affect the sessions which some of them might eventually fail (timeout). However, please also keep in mind that extremely huge amount of multiple concurrent sessions, might affect the performance of the apps, since it slowly overloads the system with tasks. For example if you have a very powerful server, with powerful resources and multiple nodes, then 100-200 concurrent connections will probably not cause any performance degradation, but if you have e.g. 4000+ sessions and all of them doing extreme calculations, then at some point you might get an issue.
This was also discussed, previously, in the post "Maximum Number of Concurrent Sessions qliksense?" [1] and I would also recommend taking a look at "Optimizing app performance" [2], so you don't have any issues with the performance.
I hope that this information was helpful. In case I have misunderstood the use case scenario, please elaborate in details by providing additional information. However, if it has helped you resolve the issue, please mark it as accepted solution to give further visibility to other community members.
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[1] https://community.qlik.com/t5/New-to-Qlik-Sense/Maximum-Number-of-Concurrent-Sessions-qliksense/td-p...
[2] https://help.qlik.com/en-US/sense/February2022/Subsystems/Hub/Content/Sense_Hub/Apps/app-performance...
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