Enterprise JavaScript with IBM SDK for Node.js
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Enterprise JavaScript with
IBM SDK for Node.js
Joran Siu – IBM SDK for Node.js Development
Session 16762
Wed, March 4, 2015: 08:30 AM - 09:30 AM
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JavaScript
• Netscape, 1995
• Scripting language for their Navigator
browser
• Standardized as ECMAScript
(currently v5.1)
• Client-side interaction dynamism to
enhance HTML experience
• Realization only within the browser
client-side...
3/3/2015 4
"Hotwheels - Enzo Ferrari" by Leap Kye is licensed under CC BY 2.0 “Tripping on a Magic Carpet” by wackystuff is licensed under CC BY 2.0
5
Java != JavaScript
3/3/2015 6
JavaScript – Syntax fun
> ‘5’ - 3
2 // weak typing, implicit conversions
> ‘5’ + 3
‘53’ // sigh, consistency would be nice
> ‘5’ – ‘4’
1 // string – string = integer huh?
> ‘5’ + + ‘4’
‘54’ // multiple +’s are ok
> ‘Hello’ + ‘World’
‘HelloWorld’ // ah, again things make sense
> ‘Hello’ + + ‘World’
‘HelloNaN’ // we fell off the truck again
7
JavaScript – Syntax fun
> ‘5’ + - ‘2’
‘5-2’ // really confused
> var x = 3
undefined
> ‘5’ – x + x
5 // Makes sense
> var x = 3
undefined
> ‘5’ + x - x
50 // WHAT?!
8
Asynchronous JavaScript and XML (AJAX)
• Since about 2000...
• Dynamic web pages
• JavaScript sending/receiving XML-based data
asynchronously in the background
• Proliferation of JavaScript frameworks
• JavaScript largely interpreted (Rhino, Nashorn, etc.)
3/3/2015 9
What is Node.js?
• Server-side JavaScript platform
developed by Joyent
• Built on Google's V8 JavaScript runtime
• Goal: Efficiently build fast, scalable, 'real-time' network
applications
• Event-oriented, non-blocking, asynchronous I/O framework
3/3/2015 10
Why Node.js?
• It is JavaScript
– Same language on client + server side
– Availability of JavaScript talent
• End-to-End JavaScript stack
– Greater productivity and integration with JSON APIs
• Event-driven, single-threaded model
– Eliminates concurrency and thread-safety worries
• Thousands of concurrent connections with minimal
overhead
3/3/2015 11Using Node.js for..
• Back-end APIs and services
• Mobile backend as a service (MBaaS)
• “Realtime” applications
• Business analytics
• and more… http://www.nodejs.org/industry
3/3/2015 12JavaScript Landscape - Gartner
• “JavaScript technologies, in particular Node.js, are now the
Gartner Reports primary technologies supported by vendors offering emerging
mobile back-end-as-a-service (MBaaS) space”
• “Treat JavaScript experience and expertise as basic
Gartner requirements for most developers.”
Recommends • “Build up internal developer JavaScript skill sets to support
front-end and back-end mobile app development.”
• “Even though they will also be working in other languages,
Gartner Predicts JavaScript will increasingly be part of most projects across a
broader range of scenarios”
“By 2017, JavaScript will be the most in-demand language skill in mobile
application development (AD)”
3/3/2015 13MEAN Stack
MongoDB NoSQL Database
Express.js Web Applications framework
Angular.js Client-side MVC framework
Node.js Server-side JavaScript platform
• Full-stack JavaScript framework
• http://meanjs.org
3/3/2015 14What comprises of Node.js?
• Aside from Node.js, V8 itself is also used in:
– MongoDB
– therubyracer (Ruby gem)
– libv8 (Ubuntu)
3/3/2015 15Anatomy of a Node.js application
1. package.json
– Tracks properties, dependencies, version info, commands,
etc.
2. JavaScript source files (i.e. app.js)
• To install and execute:
> npm install
> node app.js
3/3/2015 16npm
• Lots of packages for use
– 127k and growing
• Command line utility to
interact with public registry
@ npmjs.org
• To install modules, issue: • 3x Growth Rate vs other runtimes
Feb 22, 2015
npm install http://www.modulecounts.com
3/3/2015 17Example: Take Existing Application
• Existing Java EE Online Stock Trading System
WebSphere
Application
Server
DB2
Business Logic
Persistent Layer
http://geronimo.apache.org/GMOxDOC20/daytrader.html
18New Portal with Node.js
• Introduce a Real-time Stock Portal (i.e. mobile)
Gateway
Portal
WebSphere
Application
Server
DB2
Business Logic
Persistent LayerWe want to Twit!
• Social Media, Push Notifications, etc.
Gateway
Twitter
Portal
WebSphere
Application
Server
DB2
Business Logic
Persistent LayerOn BlueMix
z/OS Connect
Twitter
WebSphere
App Server
Business Logic
Persistent Layer DB2On z Systems
Linux
z/OS Connect
Twitter
z/OS
WebSphere
App Server
Business Logic
Persistent Layer DB2Why Node.js on Linux on z Systems?
• Co-location of Node.js server application with data and
transactions on z/OS reduces latency of access to z/OS data.
• Availability and scalability of Linux on z Systems as an
environment for both Node.js development, test and production
• All traditional advantages of consolidating multiple distributed
servers onto Linux on z Systems: Reduce data center footprint,
simpler management, energy savings.
• Leverages the trusted environments of z Systems to maximize
security and uptime of critical Node.js applications
3/3/2015 23IBM SDK for Node.js™, Version 1.1
Combine modern web JavaScript + Node.js applications with the
benefits of z Systems hardware, monitoring, and security
High Performance JavaScript for Linux on z Systems
– Highly scalable, event-driven platform with non-blocking I/O
– Thousands of concurrent connections with minimal overhead
– Unified JavaScript ecosystem for client and server
– Up to 29% better performance over Intel on AcmeAir*
– One of the fastest growing eco-systems
• +127k modules @ npmjs.org
z Systems Connectivity
– Co-locate Node.js applications for reduced latency accessing z/OS
data/services
Security and Dependability
– Leverages the trusted environments of z Systems to maximize security
and uptime of critical Node.js applications.
Unified Diagnostics and Monitoring with IBM SDKs for Java®
– Support for IBM SDK for Node.js in IBM Support Assistant (ISA)
Compatible with latest Joyent Node.js v0.10.* releases
http://www.ibm.com/developerworks/web/nodesdk
*(Controlled measurement environment, results may vary)
3/3/2015 24IBM z13
• Continued aggressive investment in
Dynamic Runtimes on Z
• 5.0 GHz 8-Core Processor Chip
• Larger Caches, More Memory
– 2x L2 cache over zEC12
– 480 MB L4 cache for data serving
• Simultaneous Multi-Threading (SMT)
– 2x hardware threads/core for improved
throughput
– Available on IFLs
Up to 24% improvement in throughput for
generic JavaScript applications
3/3/2015 25Getting Node.js on Linux on z Systems
• IBM SDK for Node.js, Version 1.1
– Equivalent to latest Joyent Node.js version 0.10.X
– http://www.ibm.com/developerworks/web/nodesdk
• 31-bit / 64-bit drivers available for Linux on z!
• Fork Us on GitHub @
S390 V8: github.com/andrewlow/v8z
Node: github.com/andrewlow/node
3/3/2015 26Thank You!
• Please complete your session
evaluations!
Session 16762:
Enterprise JavaScript with
IBM SDK for Node.js
• www.share.org/Seattle-Eval
Joran Siu
Email: joransiu@ca.ibm.com
3/3/2015 27You can also read
