There are many factors involved in determining the server specifications needed to run Joget DX 8 effectively. These are some of the non-conclusive factors:-
Total number of users
Maximum expected concurrent users
Number of apps running on the platform
Complexity of each of the apps
Amount of data generated in each app
Network infrastructure
For example, an environment with a small number of users running a heavily-used complex app might require more resources than an environment with large number of users running some simple apps only once a day.
So based only on number of maximum and concurrent users, you wouldn't be able to predict what is needed. Usually customers would start with a single application server first, and scale up or cluster when necessary.
Check out the following articles:-
- Deployment Best Practices
- Hardware Requirements
- Monitoring using VisualVM
- Joget DX 8 Clustering and Performance Testing on Google Cloud Platform with Google Compute Engine and Red Hat OpenShift