Manage sessions of web apps

I recently deployed a web app and asked some colleagues to try it. It seems that they often get the "All available sessions are in use. Try again at a later time" error, although I wouldn't have expected anything close to 32 concurrent sessions. Are there ways to:

1. See and manage all active sessions? Something like a session manager.
2. Force sessions to timeout even when the user is inactive on the app, without having to close the browser, get the computer to sleep mode, etc?

[Matan Mazor]

I'm experiencing a similar issue - it seems like only one person can use the app at a time, with a minimum of a 5 minutes break between sessions.

Answer 1

[Kojiro Saito]

1. There is no session manager in WebApps Server as of R2019a. You can find incoming connection and exit from Web App Server log files (default location in Windows is C:\ProgramData\MathWorks\webapps\R2019a\logs). But I think it's hard to understand how many current sessions are.
2. You can set timeout from Web App Server configurations. By default, it is set to 5 minutes. For detail please see the sesion timeout of this document (Configure MATLAB Web App Server).

[Matan Mazor]

Thank you!

For some reason though the server supports only one session at a time, which is not enough for our needs. Is there any way to increase this number?

[Kojiro Saito]

No, Web Apps Server supports simultaneous multiple sessions. You can change maximum sessions by increasing MaxWorkers in $MATLAB_Runtime\bin\win64\webapps.config file and restart Web Apps Server. Though, as of R2019a, maximum sessions is 32 as described in this document.

[Matan Mazor]

Thanks for the answer!

32 sessions would be great, but the server only supports 1 session at the moment (although 32 is specified as the maximum number in the config file)...

Is there a way to fix this?

Alternatively, is there a way to time-out the session after 5 minutes, even if the app is still open on someone's browser?

Best,

-Matan

[Walter Roberson]

(Matan asks if there are updates available on this)

Answer 2

[meng lei]

It's seems like one app will use several sessions, which means one opened app will cost several sessions, so you should modify the MaxWorkers to 200 or even more.