I've wanted to make an app in the cloud (aka someone else's server) that uses several technologies. This is an indolent walk through of what I've come up with so far.
The list of technology we'll be using is
• mapbox-gl.js (vector tile map)
If there is time, we'll deploy it to gcloud (App Engine).We may also use mapbox.com (http://mapbox.com/) or node.js to serve the map tiles instead of sqlite-jdbc if I don't have time.
The plan is to display a map of the world, click on the map to create a marker which then gets broadcast to anyone else on the web page. Clicking on a marker deletes it from everyone's map.