What's the fuss about Phoenix?

WebCamp Zagreb, 2016

Transcript

1. What’s the fuss about
   Phoenix?
   @sasajuric

   aircloak.com
   

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2. Phoenix web framework
   Elixir programming language
   Erlang VM
   written in
   runs on
   

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3. productivity
   simplicity
   maintainability
   interoperability
   fault-tolerance
   scalability
   

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4. Erlang is a programming language used
   to build massively scalable soft real-time
   systems with requirements on high
   availability.
   erlang.org
   

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7. separate execution
   no shared memory
   separate garbage collection
   cooperation through communication
   isolated crashes
   detectable crashes of other processes
   

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8. run different "things" separately
   

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9. scheduler scheduler scheduler scheduler
   CPU CPU CPU CPU
   Erlang VM
   

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10. Node 1 Node 2
    Node 3
    

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13. DEMO
    

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14. conn conn
    your code
    

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15. conn conn
    plug
    

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16. conn
    log
    conn
    handle
    authenticate
    authorize
    fetch session
    

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17. endpoint
    conn
    conn
    router
    controller
    

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18. endpoint
    conn
    conn
    router
    controller
    endpoint
    conn
    conn
    router
    controller
    endpoint
    conn
    conn
    router
    controller
    

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19. CODE
    

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20. client server
    socket
    

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21. client server
    

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22. client server
    join "lobby"
    send "room:42", "message", payload
    send "room:42", "message", payload
    socket
    send “lobby", "rooms", payload
    join "room:42"
    

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23. socket
    client
    channel
    channel
    socket
    client
    channel
    channel
    

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24. import Socket from "phoenix"
    socket = new Socket("/socket")
    socket.connect()
    room = socket.channel("room:elixir", payload)
    room.join()
    

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25. room.push("some_event", payload)
    room.on("some_event", (payload) => {
    // ...
    })
    

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26. defmodule MyEndpoint do
    socket "/socket", MySocket
    # ...
    end
    

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27. defmodule MySocket do
    use Phoenix.Socket
    transport :websocket, Phoenix.Transports.WebSocket
    transport :longpoll, Phoenix.Transports.LongPoll
    channel "lobby", LobbyChannel
    channel "room:*", RoomChannel
    # ...
    end
    

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28. defmodule RoomChannel do
    use Phoenix.Channel
    def join(topic, payload, socket) do
    # ...
    end
    def handle_in(event, payload, socket) do
    # ...
    end
    def handle_info(erlang_message, socket) do
    # ...
    end
    end
    

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29. push(socket, event, payload)
    broadcast(socket, event, payload)
    broadcast_from(socket, event, payload)
    

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30. on_some_ui_event(() =>
    channel.push("user_message", payload))
    channel.on("user_message", (payload) =>
    render(payload))
    

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31. defmodule RoomChannel do
    # ...
    def handle_in(event, payload, socket) do
    broadcast(socket, event, payload)
    # ...
    end
    # ...
    end
    

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32. conference program
    chat
    

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33. conference program
    chat
    ticket purchasing
    newsletters
    ratings
    raffles
    administration
    …
    

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34. start simple
    go far
    

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35. onboarding
    - getting started guides
    - Elixir
    - Phoenix
    - elixirforum.com
    

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36. 40% off with code ctwwczg

    at manning.com
    https://joind.in/talk/60946
    

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