How can I save temporary data in Server?

Hi all,
I need to save some data in server and share to many users. I cannot save them in cookie, session. because they are in client and cannot be shared to each other. The only methed I found is save them to database, but for some temporary and often changed data that may be a bad idea. Can I just save them in the memory of Server?

Thanks

Can I just save them in the memory of Server?

how can you save data into memory of Server?

I think database is the best way to share to many users.

Or

you can write data into file also and share to many users. But i think database is best way to perform this.

What kind of data are this? Is it possible to use ServletContext if data are not that huge ?

first of all, thanks to your reply.

I want to make a ajax-based card web game, there are many temporary data, like how much life left, how much mana left, which card he has... for every action of the user I need to update the database. it's like every second for each online user one update on database! So I just thinking about other method. I think for the traditional online game, which connects with UDP/TCP, they have no such problem, they just save them in memory, right?

"roo kie" please check your private messages for some administrative matter.

Look into the ServletContext, and see if that will serve your needs.

Use File.createTempFile

What if you save them as properties of a singleton object, since if I'm not mistaken, the data that you need to save are read-only to the users.