This is an example Web API created in Node.js that connects to MongoDb. You can get a new MongoDb cloud account here. Once you create an account, you can create a database and a collection, you can modify the settings in this file. As an alternative, you can also provision a MongoDb account for yourself on Azure. The MongoDb Node.js driver works just the same in both the cases, only difference is the difference between the cluster Urls.

You can deploy the Web API on any server that can run the Node.js runtime. Alternatives that I know are IIS on a Windows server or workstation, Windows Azure and Aamazon Web Services. Node.js apps run equally well on Linux and Windows servers.

You can add many more services to the same Node.js app or create new apps for more services, each app per service to conform to micro-services architecture.

The architecture is very simple. It has a starter .js called app.js file that composes a service object that actually connects to a MongoDb cluster. App.js exposes api endpoints.

Following snippet shows how to connect to a MongoDb db from Node.js app (from here). Very similar code (except the url to the cluster) can be used for connecting to all kinds of provisions such as Azure, AWS etc.

const MongoClient = require('mongodb').MongoClient;
const uri = "mongodb+srv://kay:[email protected]/admin";
const client = new MongoClient(uri, { useNewUrlParser: true });
client.connect(err => {
const collection = client.db("test").collection("devices");
// perform actions on the collection object
client.close();
});

Simply run node app.js to debug and test the app locally. It will be available at the url specified via var port = process.env.PORT || 1337;. On cloud deployments, it's accessible from the base urls and api endpoints can be accessed by apending api/{op} to the base urls in both the local and cloud deployment. e.g. locally https://localhost:1337/api/getaccounts.