Counting active sessions if server restarts very often

[Christian Hauser]

Hello list

I implemented a session counter to count all active sessions. Now I have 
the problem that because the server is being restarted very often, my 
static variable activeSessions is always set to 0.

Is there an other way to implement this? Maybe by saving the variable 
activeSessions to a session (which is restored when the server has 
restarted)?

I'd like to know the previous value (= value before restart) of the 
active session count when the server has been restarted.

Thank you in advance for any hint on that.
  Christian
Here's my actual code:

public class SessionCounter implements HttpSessionListener {
  private static int activeSessions = 0;
  public synchronized void sessionCreated(HttpSessionEvent event) {
    activeSessions++;
  }
  public synchronized void sessionDestroyed(HttpSessionEvent event) {
    if (activeSessions > 0) {
      activeSessions--;
    }
  }
  public static int getActiveSessions() {
    return activeSessions;
  }
}


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