I have been developing application using Qooxdoo for years. It works great so far, except when the internet very slow, which is quite common problem. It make the application behave unexpectedly weird because user will randomly click anywhere while data loading from the server.

One way to solve this problem is to design using offline first concept. That is where i get to know about PouchDB and CouchDB. Couchapp is a convinient way to develop application on CouchDB.

Installing couchapp is pretty easy,

#aptitude install python-pip
#pip install couchapp

Then creating a new project,

$couchapp generate hello

Related
Couchapp on github
Couchapp documentation
Building couchapp