breaking the eggshell: from .net to node.js
TRANSCRIPT
Breaking the eggshell: From .NET to Node.js
Barbara Fusinska@basiafusinska
barbarafusinska.com
About me
ProgrammerGeek
Sweet tooth
Objectives
Agenda
• When, why & what?• But… Windows• Application building crash course– Development environment setup– Creating the web application– Async library– Working with databases
• Managing the application– Testing– Debugging
What is Node.js?
An open-source platform built on JavaScript runtime that
uses an event-driven, non-blocking I/O model for
easily creating lightweight server-side and networking
applications.
Why is it so cool?
• Platform independent• Scalable• Faster• Lightweight• Optimised
JavaScript
If you still don't think JavaScript has won the web, please read on.
Is JavaScript tragically important?
Any application that can be written in JavaScript will eventually be written in
JavaScript
It’s a cancer (Node.js)
Prototype approach support
• Easy onboard• Simple programming
model• Simple solution that
works
A bit of an architecture…
How to choose?
• CLR – multithreaded engine, CPU heavy operations
• Node.js – single thread, leightweight I/O heavy systems, async everything
Cross platform
Simplicity
Community
• .NET – well established, Patterns & Practices
• Node.js – considered simpler, just works
But… Windows
• Node runs on Windows• Node can run inside IIS• Node can run on Windows Azure
• Cross-platform handling:– VM– Containers
Node Tools for VS
VS Code
Installation & configuration
Package Management
• NuGet -> npm• .nuget/packages.config
-> packages.json• packages ->
nodes_modules
npm
Development environment
• IDE• Running the app• Organising the project• Dependencies
Running Node.js app
Nodemon
Task runners
• Why? -> automation
• What?:– Tests– Building css files– Loading libraries– Running– Deployment
Gruntfile
Updating statuses
How
API Web AppGET api/events
POST api/events/:username
Creating web app
ASP.NET MVC,WebAPI Express
Razor
SignalR
Vash.js
Socket.io
Creating express app
Express vs. Asp.NET MVC
Organising the code
App.js
Routing
Passing model
Jade
Callbacks
Async
Async solution
Databases
• MongoDB• Cassandra• CouchDB• ElasticSearch• Redis• PostgreSQL• MySql• MS Sql Server• Oracle
Set up the connection to MySql
Querying MySql
Testing
• Testing– Jasmine– Mocha– Expresso (no longer maintained)– Should– Karma
• Mocks– Sinon– Mock– NodeMock
Jasmine
Mocks
Tests in task manager
Running tests
Debugging – node-inspector
node-inspector debugging
Debugging – VS Code
Summary
• Why consider Node.js?• Introduction– Development environment– Building the application– Node concepts– Maintenance
