Uploaded byOscar Renalias
Node.js, for architects - OpenSlava 2013
The document provides an overview of Node.js, highlighting its features such as server-side JavaScript, asynchronous event-driven architecture, and robust community support through npm. It discusses various use cases for Node.js, including RESTful services and real-time applications, while cautioning against its use for CPU-bound tasks. Additionally, the document details the development toolset available and notes Joyent's role as the corporate steward of Node.js.
More Related Content
Similar to Node.js, for architects - OpenSlava 2013
Node.js, for architects - OpenSlava 2013
- 1. Oscar Renalias Getting startedwith Node.js October 11, 2013 Organizers Top Media Partner Media Partner Supporter
- 2.
- 4.
- 5. Javascript • Dynamically typed • Supports functions/closures • Object-orientedwith prototype-based inheritance • Standardized as ECMAScript
- 6. V8: High PerformanceJavaScript Engine • JIT to native: x86, ARM and MIPS • On-the-fly recompilation of “hot” functions with an optimizing compiler • ECMAScript compliant
- 7.
- 8.
- 9. Single threaded, asynchronous,event-based! Wait for callback Wait for I/O Wait for I/O Callback ready
- 10.
- 11.
- 12. So why areasync and events good? • Easier to write • Scales better • Lower memory, CPU overhead
- 14. Rapid prototyping, rapiddevelopment
- 15. RESTful services withno effort
- 16. No-fuss, native JSONhandling
- 17. Awesome Package management • Getsout of the way • Support for internal and public modules • Kiss problems with transitive dependencies goodbye
- 18.
- 19. Interesting Projects: Express • Minimalweb application framework • Additional features are provided as modules or middleware: template engines, models, authentication and authorization, etc
- 20. Interesting Projects: Socket.io • Providessupport for server-initiated push events using WebSockets, Ajax polling, Iframe, JSONP or Flashbased channels • Transparent for both clients and servers • Can run standalone or integrated with Express SERVER CLIENT
- 21. Interesting Projects: Meteor • Next-genframework for real-time collaborative web applications • Live page updates • Support for offline databases with subsequent synchronization
- 22. When to useNode.js • REST+JSON APIs • Backend for single-page web apps: same language in client and server • Real-time web apps with Socket.io and Meteor • Quick prototyping • Rapidly evolving applications: media sites, marketing, etc
- 23. When not touse Node.js • CPU-bound tasks • Multi-threaded applications • Applications that have to process large amounts of data • Boring CRUD-type web apps
- 24. Ready for theEnterprise?
- 25. Maturity • Under development since2008 • Node.js 1.0 around the corner • Nearly 40000 modules available via npm • Awesome community • Commercial support
- 26.
- 27.
- 28. Performance Test: multiple databasequeries per request, serialized as JSON responses
- 29. More Performance Test: returna response as a simple serialized JSON object Source: http://www.techempower.com/benchmarks/
- 30. Not the fastest;does it always matter?
- 31. Javascript Weird shit Like Java, with simplesyntax and no types
- 32. JavaScript is quirkydifferent • Prototype-based inheritance • “==“ versus “===“ • The meaning of “this” • Call, apply and bind in Function.prototype And more.
- 33.
- 34. Toolset • Large selection oftesting libraries: unit testing, functional testing, BDD • Static code analysis (JsHint) • IntelliJ IDEA, Eclipse (Nodeclipse) integration: highlighting, refactoring, debugging • Integration with Jenkins/Hudson, Node.js specific CI servers • NPM supports internal module repositories
- 35. Architects have alittle bit of extra work Node.js currently lacks standards; extra effort and care must be paid to • application architecture, • development lifecycle, • code quality, And many more.
- 36. Big teams, bigcodebases
- 37. Where does itrun?
- 38. Is it commerciallysupported? Joyent is the corporate steward of Node.js, the world’s best runtime for today's data-intensive, real-time applications. Joyent offers exclusive debugging and performance analysis tools for Node.js applications.
- 39.
Editor's Notes
- #8 Unashamedly inspired by: http://www.slideshare.net/sergimansilla/big-app-design-for-nodejs (slide 11)
- #10 Other approaches to deal with application parallelism:Onethread per connection – thereisanupperlimittothenumber of concurrentthreads, and thereis a memoryoverhead per threadFork a new process per connection – same as above; limitedbytheoperatingsystemprocessscheduler, and processes are heavierthanthreadsSynchronous – don’tbotherwithparallelprocessingNode.js’ approachtoparallelismscalesbetter and uses lessmemorytoprocess a largeramount of connections – butitrequiresthatwebuildapplicationsthat are not CPU-bound
- #16 Node-restifyisusedhere, butit can all be accomplishedwithout a frameworktoo.
- #17 JSON is Javascript’s native serialization formatIntegrates very well with things like JSON-based APIs,MongoDB, etc – things that speak JSON natively
- #22 http://www.meteor.com
- #24 Note on “boring CRUD-type web apps”: Node.jsframeworksdon’tmakeitneithereasiernor more difficulttowritetraditional web apps; Node.js and itsframeworksjustsimplymake no differencehere
- #25 Imagecredit: http://www.allmystery.de/i/bk33NhA_ayZYgl_USS_Enterprise_NCC_1701_A_by_cb93.jpg
- #26 https://groups.google.com/d/topic/nodejs/9afurRCTlOc/discussion
- #28 Note: Diagram inspired fromhttp://www.slideshare.net/BenLin2/webconf-nodejsproductionarchitectureNode.js processes are single threaded so scalability within the same server is dependent on the number of node processes that we run.In order to load balance the load within the same server, we can use a traditional load balancer running locally.The next step is to scale multiple servers, for which we need an additional load balanced layer on top of the local instances.Database/storage tier can be scaled according to the type of solution in use.
- #32 Imagesource: http://drtom.ch/talks/2012/06/jazoon/images/tip_of_the_iceberg.jpgOriginal idea:https://speakerdeck.com/anguscroll/the-politics-of-javascript
- #33 JavaScript is not better or worse than other languages; but it may look more accessible and easier to learn than it actually is.
- #34 Grunt = Ant,MavenYeoman = Maven, someparts of itincludingarchetypes (“generators” in Yeomanese)
- #37 Thereis no substitutefor a compilerNo provensuccess of Node.jsapplications in theenterpriseworld, yet