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 Insert Custom Session QR if Desired.

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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...

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"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

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Java != JavaScript

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JavaScript – Syntax fun > ‘5’ - 3 2

// weak typing, implicit conversions

> ‘5’ + 3 ‘53’

// sigh, consistency would be nice

> ‘5’ – ‘4’ 1 > ‘5’ + + ‘4’ ‘54’ > ‘Hello’ + ‘World’ ‘HelloWorld’ > ‘Hello’ + + ‘World’ ‘HelloNaN’

// string – string = integer

huh?

// multiple +’s are ok

// ah, again things make sense // we fell off the truck again

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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?!

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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.)

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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

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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

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Using 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

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JavaScript Landscape - Gartner Gartner Reports

Gartner Recommends

Gartner Predicts

• “JavaScript technologies, in particular Node.js, are now the primary technologies supported by vendors offering emerging mobile back-end-as-a-service (MBaaS) space”

• “Treat JavaScript experience and expertise as basic requirements for most developers.” • “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, 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

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MEAN Stack

MongoDB Express.js Angular.js Node.js

NoSQL Database Web Applications framework Client-side MVC framework Server-side JavaScript platform

• Full-stack JavaScript framework • http://meanjs.org

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What comprises of Node.js?

• Aside from Node.js, V8 itself is also used in: – MongoDB – therubyracer (Ruby gem) – libv8 (Ubuntu)

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Anatomy 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

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npm • Lots of packages for use – 127k and growing

• Command line utility to interact with public registry @ npmjs.org • To install modules, issue: npm install

•

3x Growth Rate vs other runtimes Feb 22, 2015 http://www.modulecounts.com

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Example: 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

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New Portal with Node.js • Introduce a Real-time Stock Portal (i.e. mobile) Gateway

Portal

WebSphere Application Server Business Logic Persistent Layer

DB2

We want to Twit! • Social Media, Push Notifications, etc. Gateway

Twitter Portal

WebSphere Application Server Business Logic Persistent Layer

DB2

On BlueMix

z/OS Connect Twitter

WebSphere App Server Business Logic Persistent Layer

DB2

On z Systems Linux

z/OS Connect Twitter

z/OS WebSphere App Server Business Logic Persistent Layer

DB2

Why 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

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IBM 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)

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IBM 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

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Getting 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

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Thank You! • Please complete your session evaluations! Session 16762: Enterprise JavaScript with IBM SDK for Node.js

• www.share.org/Seattle-Eval Joran Siu Email: [email protected] 3/3/2015

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