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@yourtwitter The Future of the Front-End Web Frameworks Minko Gechev twitter.com/mgechev
 github.com/mgechev
 blog.mgechev.com

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@mgechev Serving Agenda
 two pillars of the front-end frameworks of the future Rehydration

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@mgechev Disclaimer: my personal opinion; does not reflect the future roadmap of Angular

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@mgechev Not stating… ● …the “framework of the future” is Angular, React, etc. ● …the “framework of the future” is not Angular, React, etc. ● The language of the future is JavaScript ● The “future” is next year…

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@mgechev

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@mgechev Serving Rehydration Rehydration
 two pillars of the front-end frameworks of the future

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@mgechev Serving a web app in 2019

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@mgechev SSR enabled app Node.js Browser API server

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@mgechev SSR enabled app https://example.com Node.js Browser API server

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@mgechev SSR enabled app https://example.com Node.js Browser API server

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@mgechev

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@mgechev Rehydration body section p P div button

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@mgechev Rehydration body section p P div button CDN

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@mgechev Rehydration body section p P div button CDN app.js

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@mgechev Rehydration body section p P div button CDN app.js

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@mgechev

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@mgechev Pros ● Server-side rendering - social media & SEO friendly ● Once the app is loaded, the user get immediate experience ● Resources are downloaded and processed only once

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@mgechev Cons ● Stateful apps with complex state management ● Not optimized for server-side rendering ● Unresponsive apps before complete rehydration

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@mgechev Let’s go back to 2008…

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@mgechev

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@mgechev

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@mgechev

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@mgechev

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@mgechev

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@mgechev

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@mgechev LAMP stack 
 
 
 MySQL Apache Browser

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@mgechev LAMP stack 
 
 
 MySQL http://meteors-bg.com Apache Browser

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@mgechev LAMP stack 
 
 
 MySQL http://meteors-bg.com Apache Browser

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@mgechev LAMP stack 
 
 
 MySQL http://meteors-bg.com Apache Browser

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@mgechev LAMP stack 
 
 
 MySQL http://meteors-bg.com Apache Browser update_user.php

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@yourtwitter State transfer in LAMP var userData = <?php echo json_encode($data) %>

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@mgechev Pros ● The app is server-side rendered by default ● The app is interactive immediately ● The app “rehydrates” without destroying the rendered UI ● We get only the assets needed by the current page (ideally)

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@mgechev Cons ● Does not provide immediate transitions across pages ● Downloading/processing the same assets multiple times

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@mgechev

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@mgechev Let’s look into the future…

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@mgechev Happy User Rule #1

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@mgechev Optimizing for UX ● The app must load fast ● The app be responsive

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@mgechev Progressive Rehydration

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@mgechev SSR enabled app https://example.com Node.js Browser API server

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@mgechev weather icon temp app profile avatar details form app profile form details

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@mgechev Rules of Progressive Rehydration Component is loaded & bootstrapped on interaction Component is loaded & bootstrapped when it receives new data Each logical unit has its own bundle

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@mgechev Rules of Progressive Rehydration Component is loaded & bootstrapped on interaction Component is loaded & bootstrapped when it receives new data Each logical unit has its own bundle

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@mgechev

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@mgechev weather icon temp app profile avatar details form user service formatter app

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@mgechev weather icon temp app profile avatar details form user service formatter app

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@mgechev weather icon temp app profile avatar details form user service formatter app

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@mgechev weather icon temp app profile avatar details form user service formatter app

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@mgechev weather icon temp app profile avatar details form user service formatter profile

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@mgechev weather icon temp app profile avatar details form user service formatter

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@mgechev weather icon temp app profile avatar details form user service formatter

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@mgechev weather icon temp app profile avatar details form user service formatter

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@mgechev weather icon temp app profile avatar details form user service formatter

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@mgechev Series of waterfall downloads

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@mgechev

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@mgechev

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@mgechev Serving Serving
 two pillars of the front-end frameworks of the future Rehydration

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@mgechev weather icon temp app profile avatar details form user service formatter

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@mgechev route.js weather icon temp app profile avatar details form user service formatter

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@mgechev Single HTTP request for getting the route

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@mgechev CDN edge server

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twitter.com/mgechev

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twitter.com/mgechev

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twitter.com/mgechev

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twitter.com/mgechev

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twitter.com/mgechev

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twitter.com/mgechev

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@mgechev Route-level code-splitting does not scale

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@mgechev

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@mgechev

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@mgechev

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@mgechev /script?a+b+c+d

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@mgechev /script?a+b+c+d

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@mgechev How does this work with a static server?

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@mgechev It does not.

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@mgechev

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@mgechev

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@mgechev

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@mgechev

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@mgechev We are building the future of frameworks together

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@mgechev Thank you! twitter.com/mgechev
 github.com/mgechev
 blog.mgechev.com