In the past, C# developers’ could only look in envy as the world moved to container based micro services and cloud deployment – until now. With the new ASP.NET Core a C# developer can write REST based microservices using the latest and greatest Visual Studio and deploy them in a different OS - or the cloud using Docker, quickly and effortlessly.

1. Developing Microservices
using .NET Core
Dror Helper | http://helpercode.com | @dhelper
Code Samples: https://github.com/dhelper/DotNetCoreMicroservices

2. Consultant & Architect
Developing software since 2002
Clean Coder & Test Driven Developer
Pluralsight author
https://www.pluralsight.com/authors/dror-helper
B: http://helpercode.com
T: @dhelper
About.ME

3. New project – Day 0.1
Gather top
talent
Cutting edge
technologies
and tools
N-Tier
/Hexagonal
architecture
Break
functionality
into assemblies
CI/CD
Shared
responsibility

4. Same Project – after a few <fill in the blank>
The whole
team works on
one codebase
Technology
became
obsolete
Inter-module
dependencies
Long and
painful build
process
Deployment
takes forever
The blame
game

5. Spoiler Alert!

6. A Solution - Microservices
Create
functionality
from small
building blocks
Small teams
organized
around domains
Independent
technology
stacks
Isolation
Smart
endpoints/dumb
pipes
Manageable
codebase

7. https://github.com/dotnet-architecture/eShopOnContainers

9. The .NET Family
.NET
Framework
Xamarin
.NET Core

10. Next Generation Websites and Services
High Performance
Modular Compostable Framework
Open Source
Multi Platform
ASP.NET Core
.NET Framework .NET Core

11. ASP.NET Core Service Architecture
Controller
Business Logic
Data access layer

12. ASP.NET Core Middleware
Middleware
3
// logic
// logic
Middleware
2
// logic
Next();
// logic
Middleware
1
// logic
Next();
// logic
Request
Response

13. Say hello to my little friend
App App App

14. Works On My Machine!

15. Docker for Developers
docker run –name <img> -e <key>=<value> -p <out>:<in> <container>
docker run –name myDB –e POSTGRES_USER=dror –p 5432:5432 postgres:latest
• docker ps [-a]
• docker stop <container id>
• docker rm <container id>
• docker system prune

16. Reduce the Pain of multi-container deplotment
> docker run …
> docker run …
> docker run …
.
.
.
version: '3'
services:
mysimplewebapi:
image: mysimplewebapi
depends_on:
- "postgres_image"
build:
context: ./MySimpleWebApi
dockerfile: Dockerfile
environment:
DB_CONNECTION_STRING: “..."
postgres_image:
image: postgres:alpine
ports:
- "5432:5432"
environment:
POSTGRES_USER: “..."
docker-compose

17. Multiplatform Microservices (in .NET)
Docker
Http
ASP.NET
Core

18. Thank you 
Dror Helper | http://helpercode.com | @dhelper
Code Samples: https://github.com/dhelper/DotNetCoreMicroservices