Getting started with node.js @ AngleBrackets 2018

Less getting started and more deep dive into asynchronous non-blocking event-driven programming.

Transcript

1. Getting started with Node.js @jawache AngleBrackets 2018
2. Asim Hussain @jawache codecraft.tv microsoft.com @jawache
3. https://aka.ms/jawache-cda @jawache
4. @jawache
5. Agenda @jawache
6. • What is Node? • Asynchronous vs Synchronous • Asynchronous Patterns • Event Loop Agenda @jawache
7. Assumptions @jawache
8. • Experienced developers • Know JavaScript • Even the new stuff Assumptions @jawache
9. What is Node? @jawache
10. What is V8? @jawache
11. @jawache https://github.com/v8/v8/wiki
12. @jawache https://github.com/nodejs/node
13. @jawache https://nodejs.org
14. @jawache https://github.com/nodejs/node-chakracore https://github.com/Microsoft/ChakraCore
15. Async vs Sync @jawache
16. @jawache Sync is Blocking Async is Non-Blocking
17. @jawache
18. @jawache Analyse Text
20. "Blocking is a made up construct" - Asim @jawache
21. @jawache
22. @jawache
23. "Blocking is bad if your app deals with a lot of I/O" - Asim @jawache
24. Async Solution #1 @jawache Threads
25. @jawache
26. Multi-Threading is Hard! @jawache
27. Async Solution #2 @jawache Events
28. Node abstracts all I/O interactions into events that are handled on an implicit eventloop. @jawache
29. Node is single threaded * @jawache
30. @jawache
31. @jawache JS JS JS
32. Code doesn't block means there is always something that is running @jawache
33. @jawache
34. Node makes it is easy to write performant code @jawache
35. Async Patterns @jawache
36. • setInterval(...) • setTimeout(...) • setImmediate(...) • process.nextTick(...) • readFile(...) Async Patterns @jawache
37. Event Loop @jawache
38. @jawache ⏰ ⚠ setInterval setTimeout I/O setImmediate close JS JS JS
39. Macro & Micro Tasks @jawache
40. @jawache ⏰ ⚠ setInterval setTimeout I/O setImmediate close JS JS JS JS JS process.nextTick Promises
41. @jawache ⏰ ⚠ setInterval setTimeout I/O setImmediate close JS JS JS JS JS
42. Example @jawache
43. @jawache
44. @jawache
45. Summary @jawache
46. • Node extends and embeds V8 • Non-blocking is better for performance • Threads or Events • Async Patterns • Event Loop Summary @jawache
47. @jawache Node.js in the Enterprise Thurs 9am to 4pm Dan Wahlin John Papa
48. Asim Hussain @jawache codecraft.tv microsoft.com
49. Morning Keynote- Everything You Need to Know About Node.js Event Loop - Bert Belder, IBM https://www.youtube.com/watch?v=PNa9OMajw9w The Node.js Event Loop, Timers, and process.nextTick() https://nodejs.org/en/docs/guides/event-loop-timers-and-nexttick/ Understanding the Node.js Event Loop https://nodesource.com/blog/understanding-the-nodejs-event-loop/ Understanding the Node.js Event Loop https://blog.risingstack.com/node-js-at-scale-understanding-node-js-event-loop/ Understanding Node.js Event-Driven Architecture https://medium.freecodecamp.org/understanding-node-js-event-driven-architecture-223292fcbc2d V8 https://github.com/v8/v8 Node https://github.com/nodejs/node