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Devour The Cloud With Locust Swarms - Hands On ...
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stevenjackson
January 09, 2018
Technology
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Devour The Cloud With Locust Swarms - Hands On Load Testing
Given at CodeMash 2.0.1.8
stevenjackson
January 09, 2018
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Transcript
Devour the Cloud Do you have an AWS Account?
nick @stevejxsn @nickbarendt # codemash #devour-the-cloud
[email protected]
[email protected]
Nick Barendt
Steve Jackson
None
Setup AMIs http://bit.do/devour-aws
AMIs Saleor Locust ami-da98c7a0 ami-a59bc4df You can also search for
“CM2018”
If you leave early…. Remember to stop/terminate your AWS instances!
Explore Saleor (our system under test today)
What is Load Testing?
It’s often pictured this way...
None
Load Testing simulates the experience of “many” concurrent users What
is Load Testing?
Load Testing is not about optimizing the per user experience
Most test tools are bad at Assets Javascript
None
None
None
Needing load testing is a good problem
It’s not hard…. Resource Planning Performance Regressions Architecture Changes
Ok, so what are we focusing on?
Key Question: How many users can I have on my
site before things break?
Key Question: How many users can I add before performance
becomes unacceptable?
None
None
Close Enough
None
It’s About Tradeoffs
None
Why Locust?
Simple When will this endpoint fall over?
Record/Playback Easy to get Started
Programmatic Simple -> Complex
DSL
Scales Horizontally
Scales Horizontally
None
Simple Web UI
None
User Signup http://bit.do/devour-signup
Buy! http://bit.do/devour-buy
User Funnel
None
None
None
None
100% Returning Users (20%) Find Cart Buy 80% 75%
25% 100% New Users (80%) Visit Cart Buy 97% 50%
Find
25% 100% User Funnel Visit Cart Buy 97% 50% Find
100% Find Cart Buy 80% 75% New 80% Old 20%
Weigh Tasks http://bit.do/devour-funnel
Find a Baseline
None
Identify Bottleneck
None
None
?
None
Saleor Architecture
Eliminate Bottleneck
Database Laziness Index Connection Pooling
Caching
Async
Current Architecture
Architecture with Caching
View Caching http://bit.do/devour-caching
Find new Baseline
Next Steps Choose Your Own Adventure http://bit.do/devour-advanced
Thanks! REMEMBER TO SHUT DOWN YOUR MACHINES! @stevejxsn @nickbarendt