Quick Question: Is there a way to test if a user has an active session

[Gianna Giavelli]

I want to show a list of friends, and if they are on-line (which equates to, do they have an active activeweb login session)

Any way of doing?

[Igor Polevoy]

Gianna, when your users login, you can collect them into some table. 

When users logout, you will remove  them from that table. 

You will also need to implement and configure HttpSessionListener in  your web.xml to get events in case a session expires (user walked away )

None of this is specific to JavaLite. 

tx. 

[Josh Kamau]

On the same note,  If i dont use the Session object and use only cookies, Is my application completely stateles? (Its not tied to any instance and any request can be handled by any application instance without things like 'Sticky sessions' )

Thanks

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[Igor Polevoy]

If you are using sticky sessions, then the web server (Nginx, Apache, etc) will be pinning a specific session cookie generated by Java container to a specific node. 

If you completely disable session management in Java container, you can then pin a browse IP address to a node. 

Frankly, discussions about these things are a moot point till you grow to the size of Twitter. In all our projects we used a small user object stored in the session and a sticky session load balancing, and we never ran into performance issues with this. I built apps that served up to a few hundred thousand visitors per day.

tx

On Thursday, May 21, 2015 at 6:18:38 AM UTC-5, Josh Kamau wrote:

On the same note,  If i dont use the Session object and use only cookies, Is my application completely stateles? (Its not tied to any instance and any request can be handled by any application instance without things like 'Sticky sessions' )

Thanks

On Thu, May 21, 2015 at 6:04 AM, Igor Polevoy <ig...@expresspigeon.com> wrote:

Gianna, when your users login, you can collect them into some table. 

When users logout, you will remove  them from that table. 

You will also need to implement and configure HttpSessionListener in  your web.xml to get events in case a session expires (user walked away )

None of this is specific to JavaLite. 

tx. 

On Wednesday, May 20, 2015 at 3:54:13 AM UTC-5, Gianna Giavelli wrote:

I want to show a list of friends, and if they are on-line (which equates to, do they have an active activeweb login session)

Any way of doing?

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[Gianna Giavelli]

OK that's clear thanks. Just checking if there was a function.