FOWA 2012 - node.js in production

Transcript

1. NODE.JS IN PRODUCTION
2. OR what I learned by running node.js in production
3. Maciej Małecki I write code and talk to servers for nodejitsu. https://github.com/mmalecki @maciejmalecki $ whoami
4. problems deployment monitoring scaling debugging dependency management
5. DEPLOYMENT
6. self-managed vs PaaS
7. self-managed total control easier debugging you have to set everything up you have to manage servers
8. options for self-managed haibu fleet git hooks forever ...and many more
9. PaaS easier everything is set up one-liner deployment less control harder debugging
10. options for PaaS nodejitsu heroku appfog azure ...and many more
11. MONITORING
12. you need logging!
13. events.js:68 throw arguments[1]; // Unhandled 'error' event ^ Error: connect ECONNREFUSED at errnoException (net.js:788:11) at Object.afterConnect [as oncomplete] (net.js:779:19) at process._makeCallback (node.js:248:20) info: connecting to 10.50.51.52:9002 events.js:68 throw arguments[1]; // Unhandled 'error' event ^ Error: connect ECONNREFUSED at errnoException (net.js:788:11) at Object.afterConnect [as oncomplete] (net.js:779:19) at process._makeCallback (node.js:248:20) vs
14. processes crash. deal with it.
15. and when they do, you should know about it!
16. process.on( 'uncaughtException', function (err) { reportError(err); // Report the error... process.exit(1); // ...and make sure to exit. } );
17. things you should monitor CPU usage load memory usage network traffic response times ...and many more
18. enter: dtrace
20. SCALING omg webscale!!!
21. separate your concerns
22. nodejitsu is currently running 9 services each is able to scale independently
23. run multiple instances behind a load balancer or with multiple DNS entries
24. use cluster module
25. DEPENDENCY MANAGEMENT
26. rocks
28. but managing your dependencies is hard
29. { "name": "my-app", "author": "me <me@me.me>", "version": "0.0.0", "dependencies": { "flatiron": "*", "resourceful": "*" } }
30. { "name": "my-app", "author": "me <me@me.me>", "version": "0.0.0", "dependencies": { "flatiron": "0.3.x", "resourceful": "0.3.x" } }
31. { "name": "my-app", "author": "me <me@me.me>", "version": "0.0.0", "dependencies": { "flatiron": "0.3.0", "resourceful": "0.3.3" } }
32. what if dependency’s dependencies change?
34. enter: npm shrinkwrap
35. RANDOM TIPS
36. SSL in node.js
37. failover https://github.com/mmalecki/failover-proxy
38. NODE_ENV=production
39. I ran out of slides.
40. QUESTIONS? we can also catch up at the party if I’m sober enough .
41. THANKS!