Modern Web (Umbraco) Performance Testing
by @zajkowskimarcin
zajkowskimarcin
mzajkowski
zajkowskimarcin
Marcin Zajkowski
zajkowskimarcin
mzajkowski
zajkowskimarcin
tbpgtsm.com
CTO @ Cogworks
CTO / CKO @ WOW School
Marcin @ umbraCoffee (Friday's 11:30 on YT)
Blogger @ udfnd.pl
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"Downtime is better for a B2C web service than slowness. Slowness makes you hate the service. Downtime you just try again later."
- Lenny Rachitsky, Product Manager, Airbnb
#perfmatters
Retaining users
The BBC found they lost an additional 10% of users for every additional second their site took to load.
Conversion
E-commerce studies: 2 seconds delay during checkout increases the abandonment rate by up to 30% and 100ms of Latency cost Amazon and Wallmart 1% in Sales.
"If you can't measure it,
you can't improve it."
- Peter Drucker, American Businessmen (1909-2005)
Stop guessing.
Treat performance
as feature.
Performance is a feature, not a luxury.
Build.
Measure.
Optimise.
Monitor.
Start simple.
Improve your code.
Good performance starts with good code.
Our solution
- Ryslyn Analyser (FxCopAnalyzers)
- StyleCopAnalyzers
- EditorConfig
struct, in, ref, Span<T>...
Measure.
Go deeper.
APM
Microbenchmarking / Benchmark.Net, NBench
Get low / PerfView, ANTS, windbg etc.
Automate.
Observe.
Have fun.
Summary
1. Stop guessing.
2. Treat performance as a feature.
3. Start simple.
4. Always measure.
5. Automate, observe, have fun.
6. Learn. (not only from mistakes)
