This document introduces the Phoenix web framework. It notes that Phoenix allows for concurrency, robust error handling, and websockets. Phoenix is built on top of Elixir and Plug, and uses a request pipeline architecture. It models data using Ecto with a repository pattern. Views prepare data for templates to render. The Mix build tool is used to generate, run, and manage Phoenix projects and assets. Code examples are provided to demonstrate Phoenix concepts like routing, controllers, and database migrations. The document aims to provide an overview of Phoenix for developers from other backgrounds looking for a new challenge.

1. PHOENIX |>TAIWAN
Mickey Chen
1

2. http://www.phoenixframework.org/
2

3. Chris McCord
3
JoseValim

4. WHY ANOTHER WEB
FRAMEWORK??

5. • CONCURRENCY
• ERROR HANDLING
• WEBSOCKET

6. –Herb Sutter
“The Free Lunch is Over!”
http://www.gotw.ca/publications/concurrency-ddj.htm

7. Development Speed or Performance
7

8. Have Both!

9. Phoenix is Elixir

10. https://gist.github.com/omnibs/e5e72b31e6bd25caf39a

11. 2 MILLIONS CONNECTIONS!
http://www.phoenixframework.org/blog/the-road-to-2-million-
websocket-connections
• of web sockets
• “Internet of Things”

12. DIGGING DEEPER

13. PHOENIX IS BASED ON PLUG

14. WEB REQUEST AS FUNCTION CALLS
• conn |>Your_APP => some web pages
• conn
|> endpoint
|> router
|> pipeline
|> controller
=> some web pages
Your_APP

15. M INTHE MVC
• Ecto
• More of a DSL then an ORM
• Repository Pattern
• Changesets?

16. VIEW &TEMPLATE
• View
1. RenderTemplates
2. Prepare Data forTemplates
• Template - Shapes of your output.

17. MIX,THE ELIXIR BUILDTOOL
• mix -h
• mix deps.get
• mix phoenix.new <App Name>
• mix phoenix.server
• mix phoenix.gen.html User users
• mix ecto.migrate

18. LET’S SEE SOME CODE!!

19. I AM MICKEY
• I am a Rails Dev
• Working for OptimisCorp

20. I AM NO EXPERT, BUT I JUST
LOVE A GOOD CHALLENGE!