MEAN.js with Cosmos DB on Azure

(a YouTube series by John Papa)

Cosmos DB is of significant interest to myself for projects I have been engaged in for the past couple of years which use MongoDB and MEAN in several ways. Scaling for us has always been a bit of a pain with MongoDB, and Cosmos DB on Azure looks to be relieving a lot of the headaches we have had.

MEAN stands for MongoDB, Express, Angular and Node.

I am not the author of these – this is a reference list to a YouTube series by John Papa introducing MEAN with Cosmos DB on Azure. I would normally just link directly to the creators blog or post for a series such as this, but it seems to be offline just now so I thought I would share a full list of current videos here – hopefully the original link will work again soon – which is

MEAN.js with Cosmos DB – Part 1: Introduction

John builds a lot of apps with MongoDB, Express, Angular and Node (MEAN). MongoDB just works so well with these, but recently he has been using Cosmos DB on Azure in its place because it’s easy to use, scale, is super fast, and he does not have to change how he codes.

MEAN.js with Cosmos DB – Part 2: Creating the Node.js and Express App

Creating a Node.js and Express App along with the Angular CLI. Then create a web API endpoint and try it out.

MEAN.js with Cosmos DB – Part 3: Angular and Express APIs

The A in MEAN stands for Angular. This video shows how to build an Angular UI that talks to the Express API, with GET, POST, PUT, and DELETE.

MEAN.js with Cosmos DB – Part 4: Creating and Deploying Cosmos DB

Using the Azure CLI, to create the Cosmos DB account to represent a MongoDB model database and deploy it to Azure. Then view what we created in the Azure portal.

MEAN.js with Cosmos DB – Part 5: Querying Cosmos DB

How to connect to the MongoDB database with Azure Cosmos DB, using Mongoose, and query it for data.

You can subscribe to John’s YouTube series at or follow him on twitter @John_Papa

Angular 4.3 Now Available

Re-post from

Angular version 4.3 has been released. This is a minor release following our announced adoption of Semantic Versioning, meaning that it contains no breaking changes and that it is a drop-in replacement for 4.x.x.

What’s new?
  • We are introducing HttpClient, a smaller, easier to use, and more powerful library for making HTTP Requests. Learn more about it from our docs
  • New router life cycle events for Guards and Resolvers. Four new events: GuardsCheckStart, GuardsCheckEnd, ResolveStart, ResolveEnd join the existing set of life cycle event such as NavigationStart
  • Conditionally disable animations via a new attribute, [@.disabled]
  • Support for the emulated /deep/ CSS Selector (the Shadow-Piercing descendant combinator aka >>>) has been deprecated to match browser implementations and Chrome’s intent to remove. ::ng-deep has been added to provide a temporary workaround for developers currently using this feature.
For the complete list of features and bugfixes please see the changelog.