This app serves as the realtime component of canvas. It runs a ShareDB server, which provides operational transformation for operations on canvases.
See app.json for details about environment variables for the following dependencies.
After deploying the Canvas API, this app can be deployed using the Heroku button above. After the app is created, attach the API's PostgreSQL and Redis addons:
$ heroku addons:attach $API_DATABASE_ADDON_NAME --as DATABASE $ heroku addons:attach $API_REDIS_ADDON_NAME --as API_REDIS