Cascon intro

© 2016 IBM Corporation 1

Agenda – CASCON 2016

• Why Node.js ?

• Node.js quick look

• Node.js community

• IBM involvement

© 2016 IBM Corporation

• What is it ?

• Ecosystem

• Productivity

• Performance

Why Node.js ?

2


Why Node.js –What is it?

• JavaScript != Java

• Node.js = Server-side JavaScript

• Event-oriented

• Non-blocking

• Asynchronous

http://www.modulecounts.com/


• There is a module for that• 300K modules

• #1 on module counts

• #1 on Github (#projects)

• #1 on StackOverflow(2015)

Why Node.js ? – Ecosystem

4


• Most used runtime in

Bluemix

TM

Why Node.js ? – Ecosystem

5

Why Node.js ? – Productivity


• Faster development less code

• PayPal - https://www.paypal-engineering.com/2013/11/22/node-js-at-paypal/

• Took 1/2 time with less people

• 33% fewer lines of code

• NextFlix - http://www.infoworld.com/article/2610110/javascript/paypal-and-netflix-cozy-up-

to-node-js.html

6

https://www.paypal-engineering.com/2013/11/22/node-js-at-paypal/

http://www.infoworld.com/article/2610110/javascript/paypal-and-netflix-cozy-up-to-node-js.html

Why Node.js ? – Productivity


• Reuse of “isomorphic” code components

• Availability of JavaScript talent

• Developer satisfaction

7

Why Node.js ? – Performance


Event based: perfect fit for asynchronous non-blocking I/0

8

Why Node.js ? - Performance


• Thousands of concurrent connections

• PayPal - https://www.paypal-engineering.com/2013/11/22/node-js-at-paypal/

• Double number of requests/sec

• Response times 35% lower

• Groupon – http://www.nearform.com/nodecrunch/node-js-becoming-go-technology-enterprise/

• Reduced page load times by 50%

9

https://www.paypal-engineering.com/2013/11/22/node-js-at-paypal/


• Key characteristics

• Components

• Event loop

Node.js – Quick Look


• Small (linux.tar.xz)• Download 8.2MB

• Uncompressed 35.5 MB

• Fast startup• 40 ms

• Small footprint• 16.5 MB

Node.js – Deep Dive – Key Characteristics

https://nodejs.org/en/download/

https://benchmarking.nodejs.org/

Node.js – Deep Dive - Components


V8 – JavascriptEngine

V8 JavaScript Engine Libuv

Other DependenciesICUCaresZlibhttp_parser

…

Node Binding Layer

Operating System

Node Libraries

Modules (npm or local) + Application

Op

en

SS

L

12

Node.js – Deep Dive – Event Loop



• History

• Day to Day

Node.js Community


• 2009 – written by Ryan Dhal

• Jan 2010 - npm

• Sep 2010 – Joyent sponsors Node.js

• June 2011 – Windows support

• 2012 – 2014 – Hand over to Isaac Schlueter, then Timothy J. Fontaine

• December 2014 – io.js fork

• June 2015 – Node.js Foundation

• Oct 2015 – Node.js 4.x unites io.js/node.js 0.12.x lines

• Oct 2016 – Node.js 6.x

Node.js Community - History


• TSC - Technical Steering Committee

• CTC – Core technical Committee

• Collaborators (~76)

• Working Groups (Build, LTS, Benchmarking, API etc.)

• Teams

Node.js Community – Day to Day

https://github.com/nodejs/TSC/

https://github.com/nodejs/node/

https://github.com/nodejs/node/blob/master/WORKING_GROUPS.md

https://github.com/orgs/nodejs/teams


• Node.js Community Involvement

• V8 Community Involvement

• Platform Availability

• Tooling

Node.js - IBM


• Leadership

• Founding member of Node.js Foundation (1 board member)

• 4 CTC/TSC members (+2 past members)

• Facilitating multiple working groups

Node.js IBM - Node.js Community Involvement


• Regular contributors• Active in working groups

LTS, build, post-mortem, build, security, api, citgm, dev-policy, benchmarking, internationalization

• 11 IBMr’s with commit rights • including #2, #5, #15, #28, #39, #42, #46

• Driving support for platforms - Linux on PPC, AIX and Linux on Z

Node.js IBM - Node.js Community Involvement


• Deep expertise at V8• Developed ports to IBM Platforms• Contribution back to official V8 repositories:

https://github.com/v8/v8• PPC: V8 4.3 and later have full functional PPC implementation• s390: V8 5.1 and later have full functional implementation

• ~10-15 commits per week to V8 to maintain PPC/zlinux port• Port to z/OS in progress:

• https://github.com/ibmruntimes/v8z/tree/3.28-zos

Node.js IBM –V8 Community Involvement

https://github.com/v8/v8

https://github.com/ibmruntimes/v8z/tree/3.28-zos


Node.js IBM – Platform Availability

• IBM SDK for Node.js– Shipping Node.js releases since 2013

– 0.10.x + 0.12.x + 4.x + 6.x

– Linux on x / p / z, AIX, Windows, Mac

– Working on support for z/OS

• Community


Node.js Long Term Support (LTS)

https://github.com/nodejs/lts

• Current Release

– every 6 months

– Semver major

• LTS release every

October

– Even semver majors

– 30 months of support


• Appmetrics

• Health Center

• NodeReport

• Core inspection - IDDE/LLNODE

• GCMV

Node.js IBM – Tooling


Node.js IBM – Appmetrics

https://www.npmjs.com/package/appmetrics


Node.js IBM – Tooling - Healthcenter

https://marketplace.eclipse.org/content/

ibm-monitoring-and-diagnostic-tools-

health-center

• Free download

• Node.js + Java


Node.js IBM – Tooling - NodeReport

NodeReport example - heap

out of memory error

NodeReport content:

● Event summary

● Node.js and OS versions

● JavaScript stack trace

● Native stack trace

● Heap and GC statistics

● Resource usage

● libuv handle summary

● Environment variables

● OS ulimit settings

https://github.com/nodejs/nodereport



• MDB/LLNODE/IDDE

• Working in community to

standardize

Node.js IBM – Tooling - Core Inspection

• Free download

• --trace_gc

• --trace_gc_nvp

• --trace_gc_verbose

• Node.js + Java


Node.js IBM – Tooling - GCMV

https://marketplace.eclipse.org/content/ibm-monitoring-and-diagnostic-tools-garbage-collection-and-memory-visualizer-gcmv

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