@rob_rich

Docker Isn't All Hype

Create Robust Deployments for Vue.js and ASP.NET Core

by Rob Richardson

About Me

Rob Richardson is a software craftsman building web properties in ASP.NET and Node, Angular and React. He's a frequent speaker at conferences, user groups, and community events, and a diligent teacher and student of high quality software development. You can find this and other talks on https://robrich.org/presentations and follow him on twitter at @rob_rich.

What is Docker?

Docker is an ecosystem around Container Virtualization

What are Containers?

Light-weight kernel virtualization

What is Docker?

A suite of command-line tools for creating, running, and managing containers

Containers vs VMs

Source: http://www.zdnet.com/article/what-is-docker-and-why-is-it-so-darn-popular/

Containers

Containers virtualize and share the host kernel

Containers must run on the kernel for which they were built:

Linux containers run on a Linux host
Windows containers run on Windows Server host

Host Docker in a VM

Docker pitches end here

Docker Ecosystem

Download: https://robrich.org/slides/welcome-to-docker/docker-ecosystem.pdf

DEMO

Scaffold and dockerize apps

Tutorials end here

Docker architecture design

DEMO

2 containers, 2 domains

Pros

Scale containers separately
Evolve pieces separately

Cons

Need different urls for each environment
Developer settings may differ
Rebuild images to inject new setting
CORS headers are surprisingly hard

DEMO

2 containers, 1 domain

Pros

Scale containers separately
No hard-coded urls
No CORS headers

Cons

Need kubernetes or other proxy
Entire backend must be on one subdomain or proxied to other services

DEMO

1 container, 1 domain

Pros

Easily deploy whole app to single hosting account

Cons

Can't scale front end and back end seperately

DEMO

Server-rendered SPA

Pros

Great for performance
Great for SEO: full html delivered to browser

Cons

Best with a Node.js (JavaScript) back-end
Generally doesn't use SPA's CLI

Which solution is the best?

It depends

Questions?

@rob_rich

https://robrich.org/