Optimising trivago's Global Business with Synthetic Monitoring

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Xoan Vilas gave a presentation on optimizing performance at trivago. He discussed trivago's synthetic monitoring strategy and key metrics. Some of trivago's biggest performance improvements in 2016 came from increasing CPU speeds, improving frontend performance through techniques like asset loading on demand, and optimizing assets delivery. Vilas also covered troubleshooting performance issues with third parties and features in different regions.

Xoan Vilas - @xo4n
Optimising trivago’s Global Business
with Synthetic Monitoring
Xoan Vilas - London 29th of September 2016

Xoan Vilas - @xo4n
55 live platforms
DUS
SFO
CAN
HKG

Xoan Vilas - @xo4n
FactSheet
Some data values to get an idea
Unique visitors: 120 Million/month
Number of Web requests: 230 Million/day
CDN images trafﬁc: 350TB/month
Image Requests: 12 Billion/month

Xoan Vilas - @xo4n
Performance strategy

End User
Experience
Synthetic Monitoring
Real User Monitoring (RUM)
Traffic mirroring
Analytics
Reporting
Components
DeepDive
Application
Architecture
Dimension Area of focus Objective
Metrics collection and standardisation
Real time metrics visualisation with
per-second resolution
Measure and improve user performance
perception
Backend application profiling
Frontend application profiling
Log data discovery
Transaction flow
Unique identifier
Application and hardware optimisation
Capacity planning
Trends reporting
Bottlenecks and anomalies detection
Improve code for better performance
Automate code performance
measurements
Find code errors and patterns
Mapping transactions and applications to
the underlaying infrastructure

Xoan Vilas - @xo4n
Backend performance overview
Top 3 changes in 2016 with the biggest performance impact

Xoan Vilas - @xo4n
Higher CPU clock speed 
From 2.60Ghz to 3.07Ghz > 70ms faster PHP response time *
*) https://twitter.com/xo4n/status/755774522146557952

Xoan Vilas - @xo4n
Impact in conversions 
faster responses lead to more conversions. Case studies in
wpostats.com already indicated that

Xoan Vilas - @xo4n
Webpack & JS startup improvements
#1 Reduce asset size by loading features on demand
#2 Asset caching
#3 Prioritise users over collecting data
#4 Inline SVG icons
http://tech.trivago.com/2016/08/19/js-startup-improvements/

Xoan Vilas - @xo4n
Inline SVG icons 
We improved the maintenance of trivago icon system and got
better performance as a bonus
http://tech.trivago.com/2016/09/05/inline-svg-icon-system/

Xoan Vilas - @xo4n
Backend performance improvement
MPLS line between datacenter in mainland China and HKG

Xoan Vilas - @xo4n
Third parties performance in China
trivago improved response times but 3rd parties not

Xoan Vilas - @xo4n
CDN evaluation
ChinaCache vs ChinaNetCenter

Xoan Vilas - @xo4n
Troubleshooting and Feature
performance

Xoan Vilas - @xo4n
CDN issues
Edgecast outage

Xoan Vilas - @xo4n
CDN conﬁguration
ChinaCache set up

Xoan Vilas - @xo4n
Assets delivery
Assets caching issues caused
by Varnish miss conﬁguration

Xoan Vilas - @xo4n
Third party issues
Miss conﬁgured 3rd parties
on trivago’s brazilian platform

Xoan Vilas - @xo4n
Feature testing
Compare performance
of different features

Xoan Vilas - @xo4n
room5 
trivago’s blog

Xoan Vilas - @xo4n
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Optimising trivago's Global Business with Synthetic Monitoring

1. Xoan Vilas - @xo4n Optimising trivago’s Global Business with Synthetic Monitoring Xoan Vilas - London 29th of September 2016

2. Xoan Vilas - @xo4n 55 live platforms DUS SFO CAN HKG

3. Xoan Vilas - @xo4n FactSheet Some data values to get an idea Unique visitors: 120 Million/month Number of Web requests: 230 Million/day CDN images trafﬁc: 350TB/month Image Requests: 12 Billion/month

4. Xoan Vilas - @xo4n Performance strategy End User Experience Synthetic Monitoring Real User Monitoring (RUM) Traffic mirroring Analytics Reporting Components DeepDive Application Architecture Dimension Area of focus Objective Metrics collection and standardisation Real time metrics visualisation with per-second resolution Measure and improve user performance perception Backend application profiling Frontend application profiling Log data discovery Transaction flow Unique identifier Application and hardware optimisation Capacity planning Trends reporting Bottlenecks and anomalies detection Improve code for better performance Automate code performance measurements Find code errors and patterns Mapping transactions and applications to the underlaying infrastructure

5. Xoan Vilas - @xo4n Backend Performance

6. Xoan Vilas - @xo4n Backend performance overview Top 3 changes in 2016 with the biggest performance impact

7. Xoan Vilas - @xo4n Higher CPU clock speed  From 2.60Ghz to 3.07Ghz > 70ms faster PHP response time * *) https://twitter.com/xo4n/status/755774522146557952

8. Xoan Vilas - @xo4n Impact in conversions  faster responses lead to more conversions. Case studies in wpostats.com already indicated that

9. Xoan Vilas - @xo4n Frontend Performance

10. Xoan Vilas - @xo4n Webpack & JS startup improvements #1 Reduce asset size by loading features on demand #2 Asset caching #3 Prioritise users over collecting data #4 Inline SVG icons http://tech.trivago.com/2016/08/19/js-startup-improvements/

11. Xoan Vilas - @xo4n

12. Xoan Vilas - @xo4n Inline SVG icons  We improved the maintenance of trivago icon system and got better performance as a bonus http://tech.trivago.com/2016/09/05/inline-svg-icon-system/

13. Xoan Vilas - @xo4n trivago in China

14. Xoan Vilas - @xo4n Backend performance improvement MPLS line between datacenter in mainland China and HKG

15. Xoan Vilas - @xo4n Third parties performance in China trivago improved response times but 3rd parties not

16. Xoan Vilas - @xo4n CDN evaluation ChinaCache vs ChinaNetCenter

17. Xoan Vilas - @xo4n Troubleshooting and Feature performance

18. Xoan Vilas - @xo4n CDN issues Edgecast outage

19. Xoan Vilas - @xo4n CDN conﬁguration ChinaCache set up

20. Xoan Vilas - @xo4n Assets delivery Assets caching issues caused by Varnish miss conﬁguration

21. Xoan Vilas - @xo4n Third party issues Miss conﬁgured 3rd parties on trivago’s brazilian platform

22. Xoan Vilas - @xo4n Feature testing Compare performance of different features

23. Xoan Vilas - @xo4n room5  trivago’s blog

24. Xoan Vilas - @xo4n

25. Xoan Vilas - @xo4n Higher CPU clock speed  From 2.60Ghz to 3.07Ghz > 70ms faster PHP response time * *) https://twitter.com/xo4n/status/755774522146557952

26. Xoan Vilas - @xo4n Analyze ImproveMeasure

27. Thanks! I’m done Xoan Vilas - @xo4n

Optimising trivago's Global Business with Synthetic Monitoring

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