web app confog file

[gaucho <64xcode@xxxxxxxxx>]

Hi,

In desktop apps I use a json file located in the user folder, but in
web apps the users access to the app altrough a web browser.

1) Where is the correct place to put a config file that define the
database location among other info related to the app operation?

2) How to store data for the session [1] for example last form open,
the idea is use this info to improve the user experience, creating
shortcuts to the last register alterd for example.

[1] if the answer is coquies, any samle ?

Thanks

Martin.