Node @ Flipkart

Abhinav Rastogi@_abhinavrastogi

!jQueryIf you think jQuery is the answer,

you lose a cookie and get an F grade!

Picking one is difficult!Plus its never exactly what you need

How we built a web stack in Node...

It’s really not that difficult

Node in ProductionNow this is a different story altogether

PhilosophyA web stack to build rich UIs for the next generation,

embracing progressive enhancement.

Request

Session API

JSON

Rendering

Templates

Response

Product API

Search API

Cart APIPromises

HTML

Why Node?And that too in production? :O

Parallel, AsyncHuge benefit right there over conventional stacks

Light weightBest available JS execution env

Good communityBuzzing like a beehive

“There’s a module for that”No, there really is.

Challenges we faced(So many of them!)

Code MaintainabilityWhat does it really mean?

Klass, LodashFor classy code B-)

High AvailabilityAs they say, 99.99% uptime guaranteed!

But is it really?

Keep that process runningForever

PM2

Shell Script!

TestabilityUgh… test cases :(

Test it!Mocha, Chai, Istanbul

PerformanceSo much to do… so little time

Profile it. Look, DTrace, Event Loop

Code ReusabilityNot just modules, but so much more now

ComponentsCommonJS

TemplatingJade, Handlebars, Underscore

ReactJSDoes all that, and more

Write once, run anywhere!Sh*t... that sounds like Java

Rendering on Server

Cacheable

Reliable

SEO friendly

Optimised First Paint

Rendering on Client

Less load on server

Perceived Performance

Rich UIs

Whoa.. easy thereLogging

Env specific code

External HTTP requests

ResponsivenessUseful? Needed? Required?

Or just a fancy fad?

Cross-device/browserIE? Android 2.3? Cloud browsers?

K.I.S.S!

Fanboyism?Close, but no :P

Why not Node?The other side of the story

Relatively newMany unsolved problems

“There’s a module for that”

Its an Android Play Store…Not an Apple App Store

</3Not for the weak-hearted

Productionizing NodeScrew best practices. Whatever works is best.

Monitor and Alert!Nagios, Monit

Log it.Bunyan, Winston

Server Health and Rotation Status

Keep the difference in mind!

QPS vs ConcurrencyWait, aren’t they the same?

Recap

Node in Production

Isomorphism

Useful tools and modules

Thank you@_abhinavrastogi