PHP Assíncrono com ReactPHP

PHP vs Node.js

Talk Video (07/05/2015): http://youtu.be/yQxQM5Y-MpE

Leroy Merlin (Laravel)
http://zizaco.net
Luiz Fernando / Zizaco

Request Lifecycle
WebServer
PHP
File System
External Services
Cache

Laravel Request Lifecycle
WebServer
External Services
HTTP Kernel
Service Providers
autoload
Routes
Controller

Express Request Lifecycle
AppServer
Middlewares
Routes
Controller(?)

PHP Approach
PHP HTTP Server

IO Bloqueante
CPU

L1 cache reference
0.000001 ms
Main memory reference
0.0001 ms
Enviar 1 Kb por uma conexão 1 Gbps
0.010 ms
Disk seek
10 ms
Ler 1 MB do HD
20 ms
Round trip Brazil - EUA
150 ms

IO Não Bloqueante How to?
EventLoop & Reactor Pattern
EventLoop is a programming construct that waits for and dispatches events or messages in a program & The reactor design pattern is an event handling pattern ...

select | epoll
A system call to examine the status of file descriptors of open input/output channels. | A scalable I/O event notification mechanism

File-based EventLoop
The select and poll system calls allow a set of file descriptors to be monitored for a change of state, [...] by using files to trigger and listen to events, the loop will block if there are no events ready.

File-based EventLoop
The select and poll system calls allow a set of file descriptors to be monitored for a change of state, [...] by using files to trigger and listen to events, the loop will block if there are no events ready.

ReactPHP HTTP Server

Programando Event Driven
- The good
- The bad
- The ugly

Operações Bloqueantes
$result = syncAction($param1, $param2);

Operações não Bloqueantes
asyncAction($param1, $param2, Callable $callback);
Callback Hell
$promise = asyncAction($param1, $param2);
$promise->done(Callable $callback);

Packages/Libs
90% Bloqueantes
Packages/Libs não Bloqueantes
http://github.com/react/
packages for ReactPHP

ReactPHP's ChildProcess
Roda qualquer processo de forma assíncrona (EventDriven)
http://nodejs.org/api/child_process.html

Quando usar ReactPHP/Node?
Chat
APIs
Queued Input
Data Streaming
Proxy
Monitoring
Web Applications with NoSQL

Quando não usar ReactPHP/Node
Web Applications with Relational Database
Heavy Processing (CPU Intensive)

Node.js VS ReactPHP

Node.js
+ Packages / Libs
Javascript
Compatível com Front-end
+ Maduro

ReactPHP
OOP decente
PHP
Compatível com código Back-end
+ Padronizado

Remember
Don't do cargo cult programming

Trabalhe conosco (:
Backend / Frontend
Subject: [Vaga]

Fontes
ReactPHP
http://reactphp.org/
Why Use Node.js? - Tomislav Capan
http://www.toptal.com/nodejs/why-the-hell-would-i-use-node-js
Async PHP With React (Laracon) - Jeremy Mikola
https://www.youtube.com/watch?v=s6xrnYae1FU
Laravel Request Lifecycle
http://laravel.com/docs/5.0/lifecycle
Event Correlation: What you Need to Know For IT Operations Management - Michael Johnson
http://goo.gl/0bZFaP
Callback Hell - Max Ogden
http://callbackhell.com/
Understanding the node.js event loop - Mikito Takada
http://blog.mixu.net/2011/02/01/understanding-the-node-js-event-loop/
Promises - Forbes Lindesay
https://www.promisejs.org/
I/O não bloqueante com select “na unha” (Perl) - Tiago Peczenyj
http://imasters.com.br/desenvolvimento/io-nao-bloqueante-com-ioselect-na-unha/
Reactor Pattern - Douglas C. Schmidt
http://www.dre.vanderbilt.edu/~schmidt/PDF/reactor-siemens.pdf
Differences between event driven model and reactor pattern? - Jean-Paul Calderone
http://stackoverflow.com/a/9143390
Cargo Cult Programming
http://en.wikipedia.org/wiki/Cargo_cult_programming

Transcript

1. PHP Assíncrono com
   ReactPHP
   PHP vs Node.js
   

   View Slide

2. Who am I?
   ● Programador
   ● Desenvolvedor web
   ● WebDesigner wannabe
   ● Leroy Merlin (Laravel)
   ● Sempre mais
   http://zizaco.net
   Luiz Fernando / Zizaco
   

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3. Request Lifecycle
   HTTP://
   WebServer
   PHP
   External Services
   File System
   External Services
   Cache
   

   View Slide

4. Laravel Request Lifecycle
   HTTP://
   WebServer
   External Services
   HTTP Kernel Service Providers
   index.php autoload
   Routes
   Controller
   

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5. View Slide

6. Express (Node.js)
   Request Lifecycle
   HTTP://
   WebServer
   External Services
   AppServer Middlewares
   index.js require(...)
   Routes
   Controller(?)
   Opcional
   

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7. Laravel Request Lifecycle
   HTTP://
   WebServer
   External Services
   HTTP Kernel Service Providers
   index.php autoload
   Routes
   Controller
   

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8. PHP Approach Request Lifecycle
   HTTP://
   WebServer
   External Services
   AppServer Stuff
   index.php autoload
   Routes
   Controller
   Opcional
   

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9. PHP HTTP Server
   

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10. View Slide

11. Node.js HTTP Server
    

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12. IO Bloqueante
    IO CPU IO CPU IO CPU
    

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13. IO Bloqueante
    L1 cache reference 0.000001 ms
    Main memory reference 0.0001 ms
    Enviar 1 Kb por uma conexão 1 Gbps 0.010 ms
    Disk seek 10 ms
    Ler 1 MB do HD 20 ms
    Round trip Brazil - EUA 150 ms
    IO CPU IO CPU IO CPU
    

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14. IO Não Bloqueante
    IO CPU
    IO CPU
    IO CPU
    

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15. IO Não Bloqueante How to?
    EventLoop & Reactor Pattern
    

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16. IO Não Bloqueante How to?
    EventLoop & Reactor Pattern
    "EventLoop is a programming construct
    that waits for and dispatches events or
    messages in a program & The reactor
    design pattern is an event handling
    pattern ..."
    

    View Slide

17. IO Não Bloqueante How to?
    select | epoll
    "A system call to examine the status of
    file descriptors of open input/output
    channels. | A scalable I/O event
    notification mechanism"
    

    View Slide

18. IO Não Bloqueante How to?
    File-based EventLoop
    "The select and poll system calls allow a
    set of file descriptors to be monitored for
    a change of state, [...] by using files to
    trigger and listen to events, the loop will
    block if there are no events ready."
    

    View Slide

19. IO Não Bloqueante How to?
    File-based EventLoop
    "The select and poll system calls allow a
    set of file descriptors to be monitored for
    a change of state, [...] by using files to
    trigger and listen to events, the loop will
    block if there are no events ready."
    

    View Slide

20. Node.js HTTP Server
    

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21. ReactPHP HTTP Server
    

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22. View Slide

23. View Slide

24. Programando
    Event Driven
    [✓] The good
    [✓] The bad
    [✓] The ugly
    

    View Slide

25. Operações Bloqueantes
    $result = syncAction($param1, $param2);
    asyncAction($param1, $param2, Callable $callback);
    Operações não Bloqueantes
    

    View Slide

26. Operações Bloqueantes
    $result = syncAction($param1, $param2);
    asyncAction($param1, $param2, Callable $callback);
    Operações não Bloqueantes
    Callback Hell
    

    View Slide

27. Node.js Callback Hell
    

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28. Operações Bloqueantes
    Operações não Bloqueantes
    $result = syncAction($param1, $param2);
    asyncAction($param1, $param2, Callable $callback);
    $promise = asyncAction($param1, $param2);
    $promise->done(Callable $callback);
    

    View Slide

29. Packages/Libs
    Bloqueantes
    Packages/Libs não
    Bloqueantes
    90% github.com/react/*
    &
    packages for
    ReactPHP
    

    View Slide

30. ReactPHP's
    ChildProcess
    Roda qualquer processo de forma
    assíncrona (EventDriven)
    

    View Slide

31. ReactPHP's
    ChildProcess
    Roda qualquer processo de forma
    assíncrona (EventDriven)
    

    View Slide

32. ReactPHP's
    ChildProcess
    Roda qualquer processo de forma
    assíncrona (EventDriven)
    nodejs.org/api/child_process.html
    

    View Slide

33. Why?
    

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34. Quando usar ReactPHP/Node?
    ● Chat
    ● APIs
    ● Queued Input
    ● Data Streaming
    ● Proxy
    ● Monitoring
    ● Web Applications with NoSQL
    

    View Slide

35. Quando não usar ReactPHP/Node
    ● Web Applications with Relational Database
    ● Heavy Processing (CPU Intensive)
    

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36. Node.js ReactPHP
    VS
    

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37. Node.js ReactPHP
    ● + Packages / Libs
    ● Javascript
    ○ Compatível com
    Front-end
    ● + Maduro
    ● OOP decente
    ● PHP
    ○ Compatível com
    código Back-end
    ● + Padronizado
    

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38. Node.js ReactPHP
    ● + Packages / Libs
    ● Javascript
    ○ Compatível com
    Front-end
    ● + Maduro
    ● OOP decente
    ● PHP
    ○ Compatível com
    código Back-end
    ● + Padronizado
    

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39. Remember...
    

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40. Don't do
    cargo cult programming
    

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41. Trabalhe conosco (:
    Backend / Frontend
    gguitte@leroymerlin.com.br
    Subject: [Vaga]
    

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42. Fontes
    ReactPHP
    http://reactphp.org/
    Why Use Node.js? - Tomislav Capan
    http://www.toptal.com/nodejs/why-the-hell-would-i-use-node-js
    Async PHP With React (Laracon) - Jeremy Mikola
    https://www.youtube.com/watch?v=s6xrnYae1FU
    Laravel Request Lifecycle
    http://laravel.com/docs/5.0/lifecycle
    Event Correlation: What you Need to Know For IT Operations Management - Michael Johnson
    http://goo.gl/0bZFaP
    Callback Hell - Max Ogden
    http://callbackhell.com/
    

    View Slide

43. Fontes
    Understanding the node.js event loop - Mikito Takada
    http://blog.mixu.net/2011/02/01/understanding-the-node-js-event-loop/
    Promises - Forbes Lindesay
    https://www.promisejs.org/
    I/O não bloqueante com select “na unha” (Perl) - Tiago Peczenyj
    http://imasters.com.br/desenvolvimento/io-nao-bloqueante-com-ioselect-na-unha/
    Reactor Pattern - Douglas C. Schmidt
    http://www.dre.vanderbilt.edu/~schmidt/PDF/reactor-siemens.pdf
    Differences between event driven model and reactor pattern? - Jean-Paul Calderone
    http://stackoverflow.com/a/9143390
    Cargo Cult Programming
    http://en.wikipedia.org/wiki/Cargo_cult_programming
    

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