Breaking the Server-Client Divide with Node.js and React

Nov 14, 201512 likes2,522 views

Rendering Web applications server or client side has been a war for years, with server side proponents citing 'speed to glass' and SEO, and client side boasting speed of transitions after the upfront cost, and desktop-like application feel. For a while it was necessary to pick sides, that is until React. In this talk, I will show a stack we are using in IBM Cloud Data Services that uses Node.js and React to bring the best of both worlds in isomorphic apps. Server or client? Yes!

Breaking the Server-Client
Divide with Node.js and React
Dejan Glozic, Full-Stack Architect, IBM Cloud Data Services
2015 Programming Layer

About Me
IBM Canada Toronto Lab
Full-Stack Architect
IBM Cloud Data Services
@dglozic
http://dejanglozic.com

Part 1
Brief history of the server-client wars

First there was only server
It sent pages with text, hyperlinks and images back to the browser.

Then we started running code
Great improvement, pages started coming back tailored to the user and request.

Then came Ajax
Microsoft (yes, Microsoft) added XMLHTTPRequest.

JJG called this Ajax (I don’t even).

Then came the frameworks
Because spaghetti is great with meatballs, less great with jQuery.

It’s not done until it’s overdone
‘Extreme Ajax’

desktop != server != client

2012, Twitter: Server is good!
Pendulum swings back, because ‘time to the ﬁrst tweet’ is less when server helps.

2013: Node.js extends UI tier
Nicholas Zakas says: UI is now client + Node.js server

2013: airbnb coins ‘Isomorphic’
Then it creates rendr (Keynote spell checkr throws a hissy ﬁt)

2014: React takes oﬀ
Yes, it was released in 2013 but you could not shut up about Angular then.

2015: React is Hot
Also, a bunch of nerds get together at a Toronto conference to talk about all this.

Part 2
Just enough React to make you dangerous.

Don’t compare React to
Angular.
React is just for views. You need router, model and event layers.

It assumes life is short
You (and others) should know what your code does 6 months from now.

It does not make you feel stupid
<todo-cmp [model]="todo" (complete)="onCompletingTodo(todo)"></todo-cmp>

When the state changes, render
That’s it. Seriously.

Virtual DOM is the key
React diﬀs virtual and real DOM, applies delta only.

Virtual DOM in other contexts
Server rendering, React Native.

Flux+React
Dispatcher
Data Store
ViewServer ActionAction

Part 3
In which we meet react-router and react-engine
JS

Flip the fake pages
Because we are really just showing and hiding divs

Boxes inside other boxes
A
B
C
Route: /A/B/C

React Express views
Virtual DOM can render into a buﬀer - or an Express response.

react-router is JavaScript
And Node.js can run JavaScript on the server. Hmm…

Breaking the Server-Client Divide with Node.js and React

Meet react-engine
Blend server and client using React, Express, react-router and web pack

View
All together now
react-
router
View react-engine
server.js
react-engine
client.js
react-
router View
View
Server Client

How To Follow
• Source code on GitHub: http://github.com/
dglozic/react-engine-demo
• Hosted on Bluemix: http://react-engine-
demo.mybluemix.net

Part 5
Once again, this time for the real world

Not everybody uses React
Need a compromise UI composition solution for the uber-system.

Dust.js to the rescue
Header (HTML/CSS/JS)
Page content (React)
Nav
(ditto)
Microservice 1
Microservice 2 Microservice 3

Let’s try again
• Source code on GitHub: https://github.com/dglozic/
fsto2015-demo
• Hosted on Bluemix: http://fsto-2015-
demo.mybluemix.net/

Server or client rendering? Yes!
There is no need to choose sides any more.

Initial server rendering
Instant browser content, automatic SEO

Client mount
Server-rendered state is not lost

Client takes over
All the virtues of client side JS, guilt-free

Yes, I know about Meteor
We prefer ﬂexibility of React ecosystem to ‘full framework’ lock-in of Meteor

React community hedge
Our full stack consists of multiple libraries, reducing single vendor risk

Thank you!
Follow me on Twitter: @dglozic

Read my blog: dejanglozic.com
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Breaking the Server-Client Divide with Node.js and React

1. Breaking the Server-Client Divide with Node.js and React Dejan Glozic, Full-Stack Architect, IBM Cloud Data Services 2015 Programming Layer

2. About Me IBM Canada Toronto Lab Full-Stack Architect IBM Cloud Data Services @dglozic http://dejanglozic.com

3. What I Work On

4. Part 1 Brief history of the server-client wars

5. First there was only server It sent pages with text, hyperlinks and images back to the browser.

6. Then we started running code Great improvement, pages started coming back tailored to the user and request.

7. Then came Ajax Microsoft (yes, Microsoft) added XMLHTTPRequest. JJG called this Ajax (I don’t even).

8. Then came the frameworks Because spaghetti is great with meatballs, less great with jQuery.

9. It’s not done until it’s overdone ‘Extreme Ajax’ desktop != server != client

10. 2012, Twitter: Server is good! Pendulum swings back, because ‘time to the ﬁrst tweet’ is less when server helps.

11. 2013: Node.js extends UI tier Nicholas Zakas says: UI is now client + Node.js server

12. 2013: airbnb coins ‘Isomorphic’ Then it creates rendr (Keynote spell checkr throws a hissy ﬁt)

13. 2014: React takes oﬀ Yes, it was released in 2013 but you could not shut up about Angular then.

14. 2015: React is Hot Also, a bunch of nerds get together at a Toronto conference to talk about all this.

15. Part 2 Just enough React to make you dangerous.

16. Don’t compare React to Angular. React is just for views. You need router, model and event layers.

17. It assumes life is short You (and others) should know what your code does 6 months from now.

18. It does not make you feel stupid <todo-cmp [model]="todo" (complete)="onCompletingTodo(todo)"></todo-cmp>

19. When the state changes, render That’s it. Seriously.

20. Virtual DOM is the key React diﬀs virtual and real DOM, applies delta only.

21. Virtual DOM in other contexts Server rendering, React Native.

22. Flux+React Dispatcher Data Store ViewServer ActionAction

23. Part 3 In which we meet react-router and react-engine JS

24. Flip the fake pages Because we are really just showing and hiding divs

25. Boxes inside other boxes A B C Route: /A/B/C

26. React Express views Virtual DOM can render into a buﬀer - or an Express response.

27. react-router is JavaScript And Node.js can run JavaScript on the server. Hmm…

29. Meet react-engine Blend server and client using React, Express, react-router and web pack

30. View All together now react- router View react-engine server.js react-engine client.js react- router View View Server Client

31. Part 4 Demo + code review, ﬁrst attempt

32. How To Follow • Source code on GitHub: http://github.com/ dglozic/react-engine-demo • Hosted on Bluemix: http://react-engine- demo.mybluemix.net

33. Part 5 Once again, this time for the real world

34. Remember this page?

35. Not everybody uses React Need a compromise UI composition solution for the uber-system.

36. Dust.js to the rescue Header (HTML/CSS/JS) Page content (React) Nav (ditto) Microservice 1 Microservice 2 Microservice 3

37. Let’s try again • Source code on GitHub: https://github.com/dglozic/ fsto2015-demo • Hosted on Bluemix: http://fsto-2015- demo.mybluemix.net/

38. Conclusion Isomorphic apps FTW

39. Server or client rendering? Yes! There is no need to choose sides any more.

40. Initial server rendering Instant browser content, automatic SEO

41. Client mount Server-rendered state is not lost

42. Client takes over All the virtues of client side JS, guilt-free

44. Yes, I know about Meteor We prefer ﬂexibility of React ecosystem to ‘full framework’ lock-in of Meteor

45. React community hedge Our full stack consists of multiple libraries, reducing single vendor risk

46. Q/A ?

47. Thank you! Follow me on Twitter: @dglozic Read my blog: dejanglozic.com 2015 Programming Layer