Redis has a Windows port provided by 'Microsoft Open Technologies'. You can use the msi installer found on: https://github.com/MSOpenTech/redis/releases
After installation completes you can see 'Redis' is a Windows service (and it's status should be "Started")
To write an 'Hello world' example that uses Redis in Node.js (in windows as well) you can use the following npm module : https://www.npmjs.com/package/redis
code sample:
var redis = require('redis'),
client = redis.createClient();
client.set('mykey', 'Hello World');
client.get('mykey', function(err,res){
console.log(res);
});