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PHP Assíncrono com ReactPHP PHP vs Node.js

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

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

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

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

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

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

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PHP HTTP Server

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Node.js HTTP Server

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IO Bloqueante IO CPU IO CPU IO CPU

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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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IO Não Bloqueante IO CPU IO CPU IO CPU

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IO Não Bloqueante How to? EventLoop & Reactor Pattern

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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 ..."

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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"

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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."

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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."

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Node.js HTTP Server

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ReactPHP HTTP Server

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

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

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

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Node.js Callback Hell

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

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

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

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

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

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Why?

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

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

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Node.js ReactPHP VS

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

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

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Remember...

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Don't do cargo cult programming

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

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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/

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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