Node.js and Yahoo

Node is used at Yahoo for an increasing number of our products and for building, testing, provisioning, and deploying them. Learn about where Yahoo uses Node, why we continue to use Node, and the practices that help us use Node effectively.

Transcript

1. Node.js & Yahoo
2. Node.js & Yahoo
3. @reid
4. locate node
5. yahoo.com flickr.com
6. CI/CD Internal npm registry
7. Yahoo & Yahoo devs
8. Why Node?
9. “...simple, easy-to- understand solutions that we trust.” — Instagram
10. Our products are cutting edge
11. Our products are cutting edge (Not our technology)
12. Node Understood and tested for years
13. Node Used by Yahoo devs
14. Node Used by Yahoo devs then Yahoo itself
15. Node Where do we use it?
16. Node Where do we use it? For hosted apps
17. Node Where do we use it? For hosted apps and building them
18. Node Where do we use it? Building mobile apps
19. Node Where do we use it? Building websites
20. Node Where do we use it? Building nearly everything
21. Hosted Apps
22. Homepage My Yahoo Flickr Advertising Video Analytics
23. Internal hosting platform
24. We use Node to push Node
25. ATS & Node
26. 25,000 RPS
27. CI/CD
28. CI/CD What I work on
29. DPS What I work on
30. Builds orchestrated with Node
31. ynpm install yahoo-ci -g
32. Our Mission Everything at Yahoo built and deployed with Node programs
33. Massive Central CI
34. Docker: Crazy fast
35. Jenkins is terrible
36. Cinch
37. 2,000 RPS
38. Node for build scripts Node for build data
39. Node for build scripts Node for build data Node for deploy APIs
40. Dev Stories
41. We took over an entire floor
42. Deploy & Provision APIs
43. Zero to Node
44. 30 days
45. Small modules
46. RDL
47. require (“hapi”)
48. Shared hapi plugins for auth, routes from RDL, metrics…
49. Validate with joi
50. CD on day 1
51. Dev Tools
52. jenkins-mocha Mocha & Istanbul Tests & code coverage Puts results where CI expects
53. Publish to ynpm
54. Rapid iteration
55. Dev Recap
56. Source of truth Share modules Automate testing Pair programming Validate your inputs
57. Devtools
58. Local utilities Cross-platform Easy installation
59. Errors & Metrics
60. Tagged logs Configurable per env Easy to search
61. Wrap errors Brief user message Verbose log message Example: verror
62. Unwrapped myserver: Error: connect ECONNREFUSED
63. Wrapped myserver: failed to start up: failed to load configuration: failed to connect to database server: failed to connect to 127.0.0.1 port 1234: connect ECONNREFUSED
64. Example var verror = require('verror'); var err1 = new Error( 'No such file or directory'); var err2 = new verror.VError( err1, 'failed to stat "%s"', '/junk'); var err3 = new verror.WError( err2, 'request failed'); reply(err3.message); // simple
65. Example var verror = require('verror'); var err1 = new Error( 'No such file or directory'); var err2 = new verror.VError( err1, 'failed to stat "%s"', '/junk'); var err3 = new verror.WError( err2, 'request failed'); console.error(err3.toString()); // verbose
66. Recap
67. Automate build & test Validate your inputs Wrap errors Use delightful tools
68. yahoo.jobs
69. Q&A