Elevate_23_Advanced_FF_Usecases.pdf

Transcript

1. © 2022 Split Software, Inc. Joy Ebertz Principal Engineer Feature Flag Use Cases You Haven't Heard About Yet
2. © 2022 Split Software, Inc. Who Am I?
3. © 2022 Split Software, Inc. https://medium.com/@jkebertz
4. © 2022 Split Software, Inc. https://medium.com/@jkebertz
5. © 2022 Split Software, Inc. https://medium.com/@jkebertz
6. © 2022 Split Software, Inc. https://medium.com/@jkebertz
7. © 2022 Split Software, Inc. Who Am I (professionally)?
8. © 2022 Split Software, Inc. https://medium.com/@jkebertz
9. © 2022 Split Software, Inc. https://medium.com/@jkebertz
10. © 2022 Split Software, Inc. https://medium.com/@jkebertz
11. © 2022 Split Software, Inc. https://medium.com/@jkebertz
12. © 2022 Split Software, Inc. https://medium.com/@jkebertz
13. © 2022 Split Software, Inc. https://medium.com/@jkebertz
14. © 2022 Split Software, Inc. https://medium.com/@jkebertz
15. © 2022 Split Software, Inc. Agenda ▸ What are feature flags? ▸ Typical Use Cases ▸ Removing Dead Code ▸ Load/Stress Testing ▸ Evaluating Tech Costs ▸ Parity Testing ▸ Logging
16. © 2022 Split Software, Inc. What Are Feature Flags?
17. © 2022 Split Software, Inc. Other Terms • Feature Toggle
18. © 2022 Split Software, Inc. Other Terms • Feature Toggle • Feature Flip
19. © 2022 Split Software, Inc. Other Terms • Feature Toggle • Feature Flip • Feature Switch
20. © 2022 Split Software, Inc. Other Terms • Feature Toggle • Feature Flip • Feature Switch • Conditional Feature
21. © 2022 Split Software, Inc. Other Terms • Feature Toggle • Feature Flip • Feature Switch • Conditional Feature • Split
22. © 2022 Split Software, Inc. Code Branch Controlled by GUI
23. © 2022 Split Software, Inc. Code Sample if (Treatments.ON .equals(_splitClient.getTreatment(orgId, Splits.MY_FEATURE.name()))) { // Do Something } else { // Do Something Else }
24. © 2022 Split Software, Inc.
25. © 2022 Split Software, Inc. Code Sample if (Treatments.ON .equals(_splitClient.getTreatment(orgId, Splits.MY_FEATURE.name()))) { // Do Something } else { // Do Something Else }
26. © 2022 Split Software, Inc. Typical Use-Cases • Releasing features
27. © 2022 Split Software, Inc. Typical Use-Cases • Releasing features • Production Testing
28. © 2022 Split Software, Inc. Typical Use-Cases • Releasing features • Production Testing • A/B/C Testing
29. © 2022 Split Software, Inc. Typical Use-Cases • Releasing features • Production Testing • A/B/C Testing • Custom Packages
30. © 2022 Split Software, Inc. Typical Use-Cases • Releasing features • Production Testing • A/B/C Testing • Custom Packages • Temporary UI Customization
31. © 2022 Split Software, Inc. Typical Use-Cases • Releasing features • Production Testing • A/B/C Testing • Custom Packages • Temporary UI Customization
32. © 2022 Split Software, Inc. Releasing Features • Separating Deploy from Release
33. © 2022 Split Software, Inc. Releasing Features • Separating Deploy from Release • Canary/Ramped Release
34. © 2022 Split Software, Inc. Releasing Features • Separating Deploy from Release • Canary/Ramped Release • Off Switch
35. © 2022 Split Software, Inc. What Are Some Advanced Use-Cases?
36. © 2022 Split Software, Inc. Remove Dead Code
37. © 2022 Split Software, Inc. Why is your code dead?
38. © 2022 Split Software, Inc. Method no longer referenced Why is your code dead?
39. © 2022 Split Software, Inc. Method no longer referenced Endpoint never called Why is your code dead?
40. © 2022 Split Software, Inc. Method no longer referenced Parameter never has certain values Endpoint never called Why is your code dead?
41. © 2022 Split Software, Inc. log.info(“CODE NOT DEAD UID: 12345”);
42. © 2022 Split Software, Inc.
43. © 2022 Split Software, Inc. private void logForCleanup(String orgId, String uid) { if (Treatments.ON .equals(_splitClient.getTreatment(orgId, Splits.CLEANUP.name()))) { String message = String.format(“CODE NOT DEAD UID: %s”, uid); log.info(message); } }
44. © 2022 Split Software, Inc. private void logForCleanup(String orgId, String uid) { if (Treatments.ON .equals(_splitClient.getTreatment(orgId, Splits.CLEANUP.name()))) { String message = String.format(“CODE NOT DEAD UID: %s”, uid); log.info(message); } } Turn on CLEANUP feature flag to 1%
45. © 2022 Split Software, Inc. 1. Roll out to 1%
46. © 2022 Split Software, Inc. 1. Roll out to 1% 2. Remove any log lines hit
47. © 2022 Split Software, Inc. 1. Roll out to 1% 2. Remove any log lines hit 3. Roll out to 5%
48. © 2022 Split Software, Inc. 1. Roll out to 1% 2. Remove any log lines hit 3. Roll out to 5% 4. Remove any log lines hit
49. © 2022 Split Software, Inc. 1. Roll out to 1% 2. Remove any log lines hit 3. Roll out to 5% 4. Remove any log lines hit 5. Roll out to 100% …
50. © 2022 Split Software, Inc. 1. Roll out to 1% 2. Remove any log lines hit 3. Roll out to 5% 4. Remove any log lines hit 5. Roll out to 100% 6. Remove any code that hasn’t been hit … …
51. © 2022 Split Software, Inc. Load & Stress Test
53. Requests Mirrored Traffic Feature Flag Check New System Old System
54. Requests Mirrored Traffic Feature Flag Check New System Old System Load Test
55. Requests Mirrored Traffic Feature Flag Check New System Old System Stress Test
56. © 2022 Split Software, Inc. Evaluate Tech Costs
57. © 2022 Split Software, Inc. Requests Mirrored Traffic Feature Flag Check New System Old System
58. © 2022 Split Software, Inc. Requests Mirrored Traffic Feature Flag Check New System Old System
59. © 2022 Split Software, Inc. Requests Mirrored Traffic Feature Flag Check New System Old System
60. © 2022 Split Software, Inc. Verify Parity
61. © 2022 Split Software, Inc. New System Feature Flag Parity Check Old System Requests
62. © 2022 Split Software, Inc. Feature Flag Parity Check Requests Old System New System
63. © 2022 Split Software, Inc. Feature Flag Parity Check Requests Old System New System
64. © 2022 Split Software, Inc. Feature Flag Parity Check Requests Old System New System
65. © 2022 Split Software, Inc. Feature Flag Parity Check Log if different Requests Old System New System
66. © 2022 Split Software, Inc. Feature Flag Parity Check Log if different Requests Old System New System
67. © 2022 Split Software, Inc. Controlling Logging
68. © 2022 Split Software, Inc.
69. © 2022 Split Software, Inc.
70. © 2022 Split Software, Inc.
71. © 2022 Split Software, Inc. 15 seconds 26 minutes + 6 minutes vs
72. © 2022 Split Software, Inc. Only certain users/organizations
73. © 2022 Split Software, Inc. Only certain users/organizations Only certain profile types (or other user attribute)
74. © 2022 Split Software, Inc. Only certain users/organizations Only certain profile types (or other user attribute) Only certain classes
75. © 2022 Split Software, Inc. Recap ▸ What are feature flags? ▸ Typical Use Cases ▸ Removing Dead Code ▸ Load/Stress Testing ▸ Evaluating Tech Costs ▸ Parity Testing ▸ Logging
76. © 2022 Split Software, Inc. Questions? • Email me: joy.ebertz@split.io • Find me at: https://medium.com/@jkebertz
77. © 2022 Split Software, Inc. Joy Ebertz @jkebertz Joy.Ebertz@split.io Thank You!
78. © 2022 Split Software, Inc. Further Reading • My blog on this topic: https://www.split.io/blog/5-advanced-feature- flag-uses/ • Some ways we use feature flags: https://www.split.io/blog/feature-flags-at-split/ • More about feature flags generally: https://martinfowler.com/articles/feature- toggles.html
79. © 2022 Split Software, Inc. Image Credits • Elephant by Dmitry Abramov on https://pixabay.com • Server by Mohamed Hassan from Pixabay • Logs Photo by Radek Grzybowski on Unsplash • Heartbeat by Clker-Free-Vector-Images from Pixabay • Zombie Photo by julien Tromeur on Unsplash • Typewriter from https://undraw.co/license • Flagging image owned by Split • Dam Photo by Marcus Woodbridge on Unsplash • Twitter fail whale by https://www.yiyinglu.com/ • All others are PowerPoint Icons