State of the art: Server-side JavaScript - MoscowJS

State of the Art Server-Side JavaScript 2011-12-06@amorgaut 4d.com

History

Birth• 1995 Mocha > LiveScript > JavaScript• 1996 Microsoft JScript (IE4) NetScape Enterprise Server 2 aka LiveWire/iPlanet• 1997 ECMAScript 1 “DHTML” Windows IIS 3

Maturity• 1998 - HTML/XML DOM, Sun/Mozilla Rhino• 1999 - ECMAScript 3, XMLHttpRequest, HTML 4• 2000 - ActionScript, Helma Hop• 2001 - JSON, Apple JavaScript OSA• 2002 - JSLint, “Phoenix” (Firefox)• 2003 - JavaScript Adobe Press, JScript .NET• 2004 - E4X , “Web 2.0”, JSDB• 2005 - Prototype.js, “Ajax”• 2006 - Firebug, jQuery, “Comet”, APE, “HTML5”• 2007 - SitePoint Persevere, Rhino on Rails

SSJS: The comeback• 2008 Aptana Jaxer CouchDB Acid Test 3• 2009 Narwhal & Jack ServerJS > CommonJS Node.js v8cgi, GPSEE ECMAScript 5• 2010 Helma NG > RingoJS Sun Phobos• 2011 Wakanda CoffeeScript ECMAScript 5.1

60+ existing solutionshttp://en.wikipedia.org/wiki/Comparison_of_server-side_JavaScript_solutions

Engines

C+ + C SpiderMonkey webkit JavaScriptCore: JSC 3 JIT Compilers: SquirrelFish Extreme: SFX aka NitroTraceMonkey, JägerMonkey, & IonMonkey (JIT Compiler inside) Jav C+ a + Rhino V8 Interpreted or Compiled execution JIT Compiler: CrankShaft C+ + Trident: MSHTML Chakra -> Classic JScript, Managed JScript, & JScript.NET C+ C+ + + Tamarin Carakan JIT Compiler: NanoJIT Previously: Linear A, Linear B, Futhark -> ActionScript / “ECMAScript 4”

CLIENT-SIDESpiderMonkey JavaScriptCore Rhino V8 Tamarin Trident / Chakra Carakan / Futhark

SERVER-SIDESpiderMonkey JavaScriptCore Narwhal, Narwhal, CouchDB, MongoDB, JSDB, Wakanda APE, GPSEE, SpiderNode ... Rhino V8 Narwhal, Narwhal, Helma / RingoJS, AppJet, v8cgi, Akshell Persevere, Phobos, RhiNodeII Node.js ... Trident / Chakra IronJS, Node.NET JScript.NET

Benchmarks and what they worth....

Browsers War II (MAY 2009)http://www.maximumpc.com/article/features/browser_brouhaha_your_maximum_guide_browsers_today_and_tomorrow?page=0,6

Persevere & JavaScriptDB (April 2009) http://www.sitepen.com/blog/2009/04/20/javascriptdb-perseveres-new-high-performance-storage-engine/

Node vs Thin vs Narwhal (September 2009) 300 concurrent clients completed requests: thin 36045 node 35668 narwhal 2921 > summary(node300$ttime) Min. 1st Qu. Median Mean 3rd Qu. Max. 12.0 66.0 112.0 239.4 157.0 12200.0 > summary(thin300$ttime) Min. 1st Qu. Median Mean 3rd Qu. Max. 71.0 84.0 87.0 208.7 107.0 23950.0 > summary(narwhal300$ttime) Min. 1st Qu. Median Mean 3rd Qu. Max. 928 2837 2935 2921 3018 8759 http://four.livejournal.com/1019177.html

RingoJS vs NodeJS (September 2010) http://hns.github.com/2010/09/21/benchmark.html

Spidermonkey 1.5 is ~ Firefox 2.0 (and ES-3) 1.7 is ~ Firefox 3.0 1.8 is ~ Firefox 3.6 1.8.5 + JITs is ~ Firefox 4http://www.page.ca/~wes/SpiderMonkey/Perf/sunspider_history.png

Sunspider 0.9.1 (August 2011) 7 8 6 5 4 3 2 1http://expansive-derivation.ossreleasefeed.com/2011/08/javascript-performance-test-results-with-sunspider/

Main Concepts

Integration-Oriented• Rhino - Interaction with Java (APIs and objects) - Helma, Persevere, Narwhal, RingoJS, Sun Phobos...• JScript .Net - Interaction with MS .NET (APIs and objects) - IronJS, Node.NET

Common JavaScript• Working Groups: - CommonJS - WHATWG - W3C - ECMA TC39• Ubiquity not only for ECMAScript• HTML5 is also known as: “Web Applications 1.0”• Asynchronous & Synchronous APIs

Async. Event-based Node.js like• Browser Event-Loop on the Server• An Event Loop in one single thread• Cooperative («one at a time») with async. callbacks• Node.js (V8), SpiderNode, RhiNodeII, Node.NET

Single & multi threading One context per threadSINGLE MULTI• Low memory usage • Vertical scalability (multi-core)• Potentially handle lot of requests • Thread-safety for concurrent access• Cooperative • Preemptive: Parallel code execution• Shared context • Allow Synchronous APIs• Use mostly one core • Uses easily all available cores Notes: - an event loop can generate some other threads - multi-thread architectures can run event loops in some of their threads

Database-driven• Document Store - CouchDB, MongoDB• Key/value Store - Riak• Object Store - Wakanda• Push Store - APE

APIs - Packages

CommonJSModules Packages Promises • System • File • Unit-Testing • JSGI • Binary • Stream http://wiki.commonjs.org/wiki/CommonJS

Node Async APIs• Buffer • Process• Events • Streams• File • Timers• Net • ...• OS http://nodejs.org/docs/v0.5.5/api/

W3C / HTML5 / ES.Next & other standards• Console • Structured clones• Blob, Blob URL* • Typed Arrays*• DataView* • Web Sockets• File / FileSystem • Web Storage, Indexed DB• Modules* • Web Workers• Progress Events • XHR 2

Packages & Modules• github: CommonJS modules in projects (Persevere, Narwhal, RingoJS, ...)• NPM: Node Package Manager (thousands packages)• CPM: CommonJS Package Manager (new)• PINF: Universal module loader

State of the Art Server-Side JavaScript The End or... the beginning....@amorgaut 4d.com@thibarg Wakanda.org@wakanday Wakanday.org Thanks to the CommonJS community

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State of the art: Server-side JavaScript - MoscowJS

by Alexandre Morgaut

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