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Introduction to node.js
This document provides an overview of Node.js, including: - Node.js uses a non-blocking and event-driven architecture that is well-suited for real-time applications. - It includes a short introduction to Node.js' core concepts like blocking vs non-blocking I/O. - The document outlines example applications, Node.js' ecosystem including modules and tools, and advanced topics like WebSockets and performance. - It concludes with a Q&A section.
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Introduction to node.js
- 1. node.js Jakub Nesetril jakub.nesetril@gmail.com
- 2.
- 3.
- 4. Who Are You? •JS • Ruby
- 5. Who Are You? •JS • Ruby • web
- 6. Who Are You? •JS • Ruby • web • what real language do you speak?
- 7.
- 8. TOC • blocking vs.non-blocking intro
- 9. TOC • blocking vs.non-blocking intro • short introduction to node.js
- 10. TOC • blocking vs.non-blocking intro • short introduction to node.js • examples
- 11. TOC • blocking vs.non-blocking intro • short introduction to node.js • examples • Q&A
- 12.
- 13. Tags • #javascript ,#v8 , #ssjs
- 14. Tags • #javascript ,#v8 , #ssjs • #event-oriented
- 15. Tags • #javascript ,#v8 , #ssjs • #event-oriented • #high-performance
- 16. Tags • #javascript ,#v8 , #ssjs • #event-oriented • #high-performance • #asynchronous , #non-blocking
- 17. Tags • #javascript ,#v8 , #ssjs • #event-oriented • #high-performance • #asynchronous , #non-blocking • #low-level
- 18. Tags • #javascript ,#v8 , #ssjs • #event-oriented • #high-performance • #asynchronous , #non-blocking • #low-level • #fun!
- 19.
- 20. Tags • #javascript ,#v8 , #ssjs • #event-oriented • #high-performance • #asynchronous , #non-blocking • #low-level • #stable , #mature (not!)
- 21.
- 22. (non-) Blocking IO •var rows = db.query(“SELECT * FROM…)
- 23. (non-) Blocking IO •var rows = db.query(“SELECT * FROM…) • rows.forEach…
- 24. (non-) Blocking IO •db.query(“SELECT * FROM…”, function(rows) { rows.forEach… });
- 25. Why isn’t everybody doing it?
- 26. Why isn’t everybody doing it? • non-blocking can be hard
- 27. Why isn’t everybody doing it? • non-blocking can be hard • JS is an ideal language / community for this
- 28. Why isn’t everybody doing it? • non-blocking can be hard • JS is an ideal language / community for this • Ajax / DOM has taught events to millions of people
- 29. Why isn’t everybody doing it? • non-blocking can be hard • JS is an ideal language / community for this • Ajax / DOM has taught events to millions of people • node.js = network servers in JS
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- 31.
- 32. Design Principles • non-blocking- every IO must take callback
- 33. Design Principles • non-blocking- every IO must take callback • API should be familiar to client-side JS programmers ans old school UNIX hackers
- 34. Design Principles • non-blocking- every IO must take callback • API should be familiar to client-side JS programmers ans old school UNIX hackers • built-in support for HTTP, DNS, TLS
- 35. Design Principles • non-blocking- every IO must take callback • API should be familiar to client-side JS programmers ans old school UNIX hackers • built-in support for HTTP, DNS, TLS • support advanced features (chunked encoding, pipelining, hanging requests for websockets etc.)
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- 37.
- 38. Ecosystem • node modules(CommonJS)
- 39. Ecosystem • node modules(CommonJS) • npm
- 40. Ecosystem • node modules(CommonJS) • npm • connect & express
- 41. Ecosystem • node modules(CommonJS) • npm • connect & express • node-inspector
- 42. Ecosystem • node modules(CommonJS) • npm • connect & express • node-inspector • bounce
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- 44.
- 45. Advanced Topics • WebSockets •Server-side DOM
- 46. Advanced Topics • WebSockets •Server-side DOM • Performance
- 47. Advanced Topics • WebSockets •Server-side DOM • Performance • Hosting
- 48.
- 49.
Editor's Notes
- #26 Example 0 - async switch lines and test
- #31 Example 1 - server Example 2 - dns show node API docs
- #32 modules example, node modules, npm
- #33 modules example, node modules, npm
- #34 modules example, node modules, npm
- #35 modules example, node modules, npm
- #36 modules example, node modules, npm
- #41 Scrabbly (http://scrabb.ly/), Swarmnation (http://swarmation.com/), Serrano (http://starcraft2destroyedmymarrage.no.de/)