Re: [Cppcms-users] Purpose of session

[Lederhilger M. <M.L...@ds...>]

Am 2014-04-16 14:01, schrieb Martin Lederhilger:
> Hello,
> 
> I have a few questions regarding the purpose of session. First of all I
> understand it's main purpose, which is distinguishing connections from
> different users (= sessions). But apart from that, is it only used to
> store some global and not often changing information like user id, csrf
> token and alike, which is useful for all applications in an application
> hierarchy? I would need to store some state per application in the

An example of such a state in the application would be to collect some
parameters on three different wizard pages, and to only apply them (eg.
persist them in a configuration file) when the users finishes filling
out the last page.

> hierarchy per session. I think it is not good to store that in the
> session itself - need for serialization / deserialization, changes to
> the session can be lost if requests from the same session are handled in
> parallel (if a second request which is changing the session is handled
> in the time between load and save of the session of the first request).
> Is it better to store the application state elsewhere? Is it possible to
> get notified, if CppCMS garbage collects sessions, so that the
> additional application state can be cleaned up too?
> 
> Thank you for your answers,
> 
> Martin Lederhilger
>