Node.js - A practical Introduction

Talk given at Big Tech Day 5 in Munich on 15.06.2012.

Transcript

1. A practical introduction 15.06.2012 - Big Tech Day 5, Munich Felix Geisendörfer
2. Felix Geisendörfer
3. transloadit.com
4. core contributor
5. npm modules
6. node-formidable
7. node-mysql
8. ~50 modules total
9. (@)felixge(.de)
10. Audience
11. Software Developers?
12. JavaScript Developers?
13. Heard about node.js?
14. Using node.js?
15. What is node.js?
16. JavaScript on the Server
17. Hello World
18. 1 var http = require('http'); 2 3 http.createServer(function(req, res) { 4 res.end('Hello World'); 5 }).listen(8080); hello world http server in node.js
21. Features • TCP / UDP • HTTP / HTTPS • File System • Buffers (byte arrays) • DNS • Child Processes • Http / Https • Crypto • ZLIB • Readline / TTY / REPL
22. < 5 min to install Windows, Mac, Linux
23. History
24. 1995 LiveWire released
25. 1997 Rhino started
26. ...
27. Ryan Dahl starts the node project (first commit) Feb 16, 2009
28. I discovered node.js (v0.0.6) ~June, 2009
29. Isaac Schlueter starts the npm package manager Sep 29, 2009
30. Ryan’s talk at JSConf.EU gets people excited about node Nov 7, 2009
31. ...
34. What is special?
35. Non-blocking I/O
36. var image = fs.readFileSync('some.jpeg'); console.log('hello'); vs fs.readFile('some.jpeg', function(err, image) { }); console.log('hello');
37. Easy concurrency
38. Low memory usage
39. Good performance
40. More on performance
41. Google V8
43. JS -> Assembly
44. Crankshaft JIT
45. Fast
46. Now in Munich
47. Simple Benchmark
48. 1 kb http responses ~6000 requests / second* * per CPU core
49. Why JavaScript?
50. // Today (15.06.2012) > (new Date).getMonth() 5
51. > 0.3 + 0.3 + 0.3 0.8999999999999999
53. Everywhere
54. War on JavaScript
55. No I/O in Standard Lib
56. Use Cases
57. WebSockets
58. Streaming
59. Code Sharing
60. etc.
61. node package manager
62. 10.000+ packages
63. local installs
65. Join the Community • Mailing list (nodejs, nodejs-dev) • IRC (#node.js) - 700+ User online
66. Thank you!
67. Questions? ” http://felixge.de/ felix@debuggable.com @felixge
68. Bonus: Live Coding