This is a sample app that shows off the power of changefeeds in RethinkDB.
It is a simple question & answer app that will allow users to add questions, up and down vote questions, and allow an administrator to answer them.
You can deploy this app directly to IBM Bluemix by clicking the button below.
Note: This will provision a RethinkDB instance within Bluemix which may incur costs, please see here for more information
Ther are a few small steps required to get up and running.
By default, this app uses a local RethinkDB instance - you will need to install and run it yourself.
If you are using Homebrew on a Mac, you can use brew install rethinkdb.
Once installed you can run RethinkDB by simply typing rethinkdb at your terminal.
Once up and running you will need to create a questions table inside the default test database. You can do this via the RethinkDB admin UI which should be running at http://localhost:8080. Add new tables via the Tables menu option from the navigation at the top of the page.
If you have a RethinkDB instance running elsewhere, you can provide these details via the RETHINKDB_URL environment variable:
export RETHINKDB_URL='rethinkdb://username:password@rethinkdb.hostname.com:12345'
You will also need Node.js installed. I used v4.4.5 so as long as you're at that version you should be fine.
Once you have Node installed, npm install should get you the rest of the way.
To start the app, node app.js, and you should see the URL that you can use to access it displayed in the output. It will look something like http://localhost:6001.
The app itself is designed to be used with an audience, and is very simple.
Ask a question via the button in the top right. Each question can be up or down voted and the questions will re-order themselves based on their current score.
If you are accessing this app via the homepage you will not be able to answer any questions, but if you access the app via the /answer endpoint, you should be able to answer questions individually.
Every connected user should see updates as questions get added, voted on, and answered.