Speaker: Daniel Khan, Node.js Technology Lead, Dynatrace Node.js delivers performance, scalability, and speed of innovation for enterprise applications, and has rapidly taken over as the preferred server-side environment. Every new technology delivers new possibilities and also new challenges. Join the webinar for a quick introduction to Node.js, and the challenges that come up during enterprise deployments. Who's This For? - Developers - Ops - Architects - Anyone interested in getting started with Node.js What's In It For You? - Understand what Node.js is - Find out about the typical use cases for Node.js - Learn about possible problems and how to make sure that your applications are running smoothly Explore our other sessions and Join the community: www.srijan.net/webinars

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NASA, Netflix, Tinder: Digital
Transformation & Node.js
Daniel Khan | Node.js Technology Lead | @dkhan
#SrijanWW | @srijan

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5. Confidential, Dynatrace LLC

6. We see ourselves
as a technology
company with a
banking license
“
Michael Corbat
PDG de Citi

7. Nike has many
more software
developers in
Oregon than
apparel designers.*
“
*from Dynatrace Perform 2015

9. Something Interesting is Happening…

10. Delivering a great cross-channel experience means
making sense out of prolific complexity
Outsourced
& Hosted
Services
GTS, BT
Legacy &
Back-Office
CICS, IMS, zOS, SOAP
3rd
Party Web
APIs
Social, Ad Serving,
Web Analytics, Search,
Maps, CDNs
SaaS
Salesforce.com,
Marketo, NetSiute
ServiceNow
Web and Mobile
Services
iOS, Android, MBaaS, Public
Cloud, eCommerce platform
Home-grown
Apps
Java, .NET, php, C++, node.js,
Enterprise
Applications
SAP, Sharepoint, Oracle
Business Suite, lync

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Node Foundation

18. Node.js is
what the Company Outlaws
use to finally introduce change

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28. @dkhan
But Why?

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JavaScript
• Easy to learn / easy to find developers
• No language boundaries between frontend and backend
• Easy to deploy and rollback
• Fast development cycles
PayPal built a web app side by side in Node and Java
and the Node version was:
• Built almost twice as fast with fewer people
• Written in 33% fewer lines of code
• Constructed with 40% fewer files
Source: https://www.paypal-engineering.com/2013/11/22/node-js-at-paypal/

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Performance
• Google V8 JavaScript Engine
• Non-Blocking I/O
• Asynchronous event based execution
Node.js shines in modern web-connected applications where it needs to
gather data from different sources, consolidate it and push it to many
clients in real-time.
Never(!) use it for CPU-bound tasks!

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Common Use Cases
• Authentification and Authorization
• Proxy
• Data Transformation
• Presentation (View Rendering)

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Node.js in a
Nutshell

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Node Standard Library
Node Bindings
V8
Thread
Pool
Event
Loop
JavaScript
C++
libuv

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V8

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Thread
Pool
Event
Loop
libuv

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DatabaseBrowser Java Application
Traditional approach

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DatabaseBrowser Node.js Application
IO Threads
Nodes approach

40. Bert Belder at Node Interactive Amsterdam

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42. Hunting Memory
Problems

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process.memoryUsage()
{ rss: 4935680, heapTotal: 1826816, heapUsed: 650472 }

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theThing
someMethod()
longStr
unused()
originalThing
Closure Context
Reference
Root

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@dkhan

52. http://bit.ly/1PvijIy
var snap =
profiler.takeSnapshot();
snap.serialize();
v8-profiler

53. D
e
l
t
a

54. Hunting CPU
Problems

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calculateFibonacci();

57. http://bit.ly/1jQMbBR
profiler.startProfiling(id);
profiler.stopProfiling(id);
v8-profiler

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NODE_ENV=productio
n
NODE_ENV=develop
ment
Blog: http://bit.ly/1flz0Xm

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NODE_ENV=productio
n
NODE_ENV=develop
ment
get(‘/routeA’, function(){})
get(‘/routeB’, function(){})
get(‘/routeC’, function(){})
get(‘/routeD’, function(){})
get(‘/routeE’, function(){})
get(‘/routeA’, function(){})
get(‘/routeX’, function(){})
get(‘/^(route|router)/(.+)’, function(){})
HTTP GET /routeX
get(‘/routeA’, function(){})
get(‘/routeX’, function(){})
O(n)

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Finding the
route

64. Boundary Problems

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1980 20001995 2005 2010 2015
Stakeholders

67. Backpressure

69. 1000 RPS
Node.js
10 RPS
Ancient Legacy Backend

70. “No man is an
island”
or … We need a holistic view.

71. Browser Webserver Node Java Oracle

72. Meet Application Performance Monitoring

73. Complete Transaction Coverage
Browser / Native Mobile Java/
.NET
Performance
Warehouse
PurePath
Collector
Dynatrace
Server
Dynatrace
Client
Sessions
Store
Exported
Session
Offline
Session
Analysis
Web Server/
PHP/ Node.js
C++, VB,
ADK
CICS
Mainframe
z/OS
MQ/ESB
Database

74. Node.js

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Coming Soon

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Q&A
Daniel Khan | Node.js Technology Lead | @dkhan | daniel.khan@dynatrace.com