Phoenix channels introduction

Channels are a really exciting and powerful part of Phoenix that allow us to easily add soft-realtime features to our applications. We are going to check that and also have an overview about Elixir and the Phoenix Framework itself. If you don't know Elixir and neither the Phoenix Framework, no problem at all.

https://www.youtube.com/watch?v=fcgS9epbptY

Transcript

1. Introduction to Channels Iuri Fernandes github.com/iurifq twitter.com/fqiuri
2. What is Elixir?
3. Things people say “Erlang with a nice syntax” “The new Ruby” “Valim’s language”
4. What is Elixir? Functional language Created by José Valim in 2012 Runs on the BEAM (Erlang VM) Influenced by Ruby
5. José Valim Founder of Plataformatec Rails core commiter alumni Ruby hero 2010
6. Language Goals Extensibility Productivity Compatibility
7. Basics Data (types) Modules Processes
8. Basics defmodule Parallel do def map(collection, fun) do runner = self Enum.map(collection, fn (el) -> spawn_link fn -> send runner, {self, fun.(el)} end end) |> Enum.map(fn (pid) -> receive do {^pid, result} -> result end end) end end
9. Metaprogramming Macros Access to code representation quote unquote
10. defmodule MyMacros do defmacro unless(condition, clauses) do quote do if(unquote(!condition), unquote(clauses)) end end end Metaprogramming
11. Community Response Adopters from Ruby and Erlang Users contributing back Several OSS projects
12. Awesome Elixir Nerves Project Poxa
13. Why Elixir?
14. Slide from José Valim’s presentations
15. Slide from José Valim’s presentations
16. Proliferation of frameworks Dynamo Charlotte Thunder Sugar
18. Concepts Overview Real-time applications (Channels) MVC Middlewares (Plug)
19. Concepts Overview Pipelines Endpoints
20. Chat example http://phoenixchat.herokuapp.com/
22. Other great features “ORM” and Migrations through Ecto Generators Live reloading of assets Internationalization
23. Similarities Productivity MVC Security Test driven Differences Applications Explicit connection transformation Channels Assets (Brunch) “Phoenix is not Rails”
24. What’s for the future? Presence channels GraphQL
25. Not convinced? Fast and productive Easy to test Highly scalable “With Phoenix, nothing is global. There is no monolith” “Phoenix favors explicitness in most of its stack.”
26. Give it a shot! Modern Stable Great community
27. http://phoenixframework.org/
30. Questions? Obrigado! Thanks! Köszi!