Devour The Cloud With Locust Swarms - Hands On Load Testing

Given at CodeMash 2.0.1.8

1. Devour the Cloud Do you have an AWS Account?
2. nick @stevejxsn @nickbarendt # codemash #devour-the-cloud steve@testdouble.com nick@barendt.com Nick Barendt Steve Jackson
4. Setup AMIs http://bit.do/devour-aws
5. AMIs Saleor Locust ami-da98c7a0 ami-a59bc4df You can also search for “CM2018”
6. If you leave early…. Remember to stop/terminate your AWS instances!
7. Explore Saleor (our system under test today)
8. What is Load Testing?
9. It’s often pictured this way...
11. Load Testing simulates the experience of “many” concurrent users What is Load Testing?
12. Load Testing is not about optimizing the per user experience
13. Most test tools are bad at Assets Javascript
17. Needing load testing is a good problem
18. It’s not hard…. Resource Planning Performance Regressions Architecture Changes
19. Ok, so what are we focusing on?
20. Key Question: How many users can I have on my site before things break?
21. Key Question: How many users can I add before performance becomes unacceptable?
24. Close Enough
26. It’s About Tradeoffs
28. Why Locust?
29. Simple When will this endpoint fall over?
30. Record/Playback Easy to get Started
31. Programmatic Simple -> Complex
32. DSL
33. Scales Horizontally
34. Scales Horizontally
36. Simple Web UI
38. User Signup http://bit.do/devour-signup
39. Buy! http://bit.do/devour-buy
40. User Funnel
45. 100% Returning Users (20%) Find Cart Buy 80% 75%
46. 25% 100% New Users (80%) Visit Cart Buy 97% 50% Find
47. 25% 100% User Funnel Visit Cart Buy 97% 50% Find 100% Find Cart Buy 80% 75% New 80% Old 20%
48. Weigh Tasks http://bit.do/devour-funnel
49. Find a Baseline
51. Identify Bottleneck
54. ?
56. Saleor Architecture
57. Eliminate Bottleneck
58. Database Laziness Index Connection Pooling
59. Caching
60. Async
61. Current Architecture
62. Architecture with Caching
63. View Caching http://bit.do/devour-caching
64. Find new Baseline
65. Next Steps Choose Your Own Adventure http://bit.do/devour-advanced
66. Thanks! REMEMBER TO SHUT DOWN YOUR MACHINES! @stevejxsn @nickbarendt