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Vamos Falar Sobre Micro Frontends
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Nélio Frazão
March 12, 2020
Technology
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Vamos Falar Sobre Micro Frontends
Talk apresentada no 8° Meet-up do Paraíba JS
Nélio Frazão
March 12, 2020
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Transcript
VAMOS FALAR SOBRE MICRO FRONTEND Palestrante: Nélio Frazão Email:
[email protected]
SOBRE NÉLIO Nélio Frazão, Frontend, com 12 anos de experiência.
Possui MBA em Marketing Digital, pela Faculdade Estácio/Idez em /João Pessoa/PB. e especialista em Desenvolvimento de Aplicações para WEB pelo UNIPÊ
ENTENDENDO O PROBLEMA SPA (MONOLITO) DB Backend (MONOLITO) A P
I G A T W A Y
DESVANTAGENS MONOLITO Baixa Escalabilidade Falta de Flexibilidade Code Base Gigante
Complexidade Preso a uma única tecnologia. Exige que todo o sistema seja replicado. Quanto maior o sistema, maior é a base de código. Dificuldade nas entregas contínuas.
MICRO SPA (MONOLITO) DB CHECKOUT SERVICE A P I G
A T W A Y DB CATALOG SERVICE
E SE O FRONT END...
MICRO FRONT END CHECKOUT FRONT END DB CHECKOUT SERVICE A
P I G A T W A Y DB CATALOG SERVICE CATALOG FRONT END B A S E A P P
MICRO FRONT END Base APP
DEFININDO MICRO FRONTEND Um estilo de arquitetura onde podem ser
feitas entregas independentes de fragmentos de frontend que compõem uma aplicação maior.
VANTAGENS MICRO FRONTEND DEPLOY INDEPENDENTE UPGRADES INCREMENTAIS MÚLTIPLAS TECNOLOGIAS TIMES
AUTONOMOS
O QUE DEVEMOS ESPERAR DE UM MICRO FRONTEND? AGNÓSTICO DE
TECNOLOGIA ISOLAR CÓDIGO DA EQUIPE DEPLOY INDEPENDENTE CONVENÇÕES DE TRABALHO
IMPLEMENTAÇÃO BUILD-TIME COMPOSITION RUN-TIME COMPOSITION VS
BUILD-TIME COMPOSITION CHECKOUT FRONT END CATALOG FRONT END Base APP
PACKAGE REGISTRY
BUILD-TIME INTEGRATION { "name": "@ecommerce/container" , "version": "1.0.0", "description": "some
ecommerce app" , "dependencies": { "@ecommerce/checkout": "^1.2.3", "@ecommerce/catalog": "^4.5.6", } }
BUILD-TIME COMPOSITION Bundles Independentes Times separados por contexto Arquitetura monolítica
para diferentes times Sem deploys independentes
RUN-TIME COMPOSITION CHECKOUT FRONT END CATALOG FRONT END BASE APP
BUILD-TIME COMPOSITION Times independentes Deploys indepentes Pode haver muitas requisições
no lado do usuário
SERVER-SIDE TEMPLATE COMPOSITION USER'S BROWSER SERVICE 2 N G I
N X CONTAINER APP SERVER SERVICE 1 <esi:include src="include/service1" />
SERVER-SIDE TEMPLATE COMPOSITION <html lang="en" dir="ltr"> <head> <meta charset="utf-8"> <title>Feed
me</title> </head> <body> <h1> Feed me</h1> <esi:include src="/order" /> </body> </html> server { listen 8080; server_name localhost; root /usr/share/nginx/html; index index.html; ssi on; rewrite ^/$ http:/ /localhost:8080/browse redirect; location /browse { set $PAGE 'browse'; } location /order { set $PAGE 'order'; } location /profile { set $PAGE 'profile' } error_page 404 /index.html; } variável $PAGE guarda a URL que está sendo solicitado:
RUN-TIME INTEGRATION VIA IFRAMES <iframe src="http:/ /micro2.com"/> <iframe src="http:/micro3.com"/> <iframe
src="http:/ /www.micro1.com"/>
RUN-TIME INTEGRATION VIA WEB COMPONENTS MICRO-APP2 MICRO-APP3 MICRO-APP1
<h1>Welcome to Feed me!</h1> <script src="https:/ /browse.example.com/bundle.js"></script> <script src="https:/ /order.example.com/bundle.js"></script>
<script src="https:/ /profile.example.com/bundle.js"></script> <div id="micro-frontend-root"></div> <script type="text/javascript"> const webComponentsByRoute = { '/': 'micro-frontend-browse-restaurants', '/order-food': 'micro-frontend-order-food', '/user-profile': 'micro-frontend-user-profile', }; const webComponentType = webComponentsByRoute[window.location.pathname]; const root = document.getElementById('micro-frontend-root'); const webComponent = document.createElement(webComponentType); root.appendChild(webComponent); </script> EXEMPLO
SINGLE-SPA BOOTSTRAP MOUNT( ) UNMOUNT( )
COMPARTILHANDO DADOS
PROPS <ContainerApp className={classes.root}> <Product item={this.props.selectedItem} /> <ProductReview item={this.props.selectedItem} /> </ContainerApp>
STATE MANAGEMENT TOOLS
DOM EVENTS let event = new Event(click) elem.dispatchEvent(event) elem.addEventListener(click, e
=> { /* code */}, false ) DISPATCH O EVENTO ESCUTA O EVENTO
DESIGN DESIGN
TESTS TESTS
CONSIDERAÇÕES FINAIS CONSIDERAÇÕES FINAIS
OBRIGADO
[email protected]
http:/ /www.linkedin.com/in/neliofrazao