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FEATURE TOGGLE
HOMETOGO USE CASE
Audrius Bugas
Chief architect. HomeToGo
audrius@hometogo.com
2
3
Features
• Admin Web Interface
• Realtime
• No Deployment
• Cloud support
Advantages
• Safe deployment
• Early feedback
• Faster delivery
• Easy A/B testing
• Realtime system tweaks
• Almost no merge conflicts
Web Interface
Setting Type
• Bool (on/off)
• String (input field)
• List, String[]
• YML object
Setting collection (domain)
Power User
Production VS Stage
• Full & Fresh Data
• Breaking Code/Changes
• Running Experiments
• Usability Testing
• Business presentations
domain hierarchy
default
Device
Locale
A/B Test
Variation
Toggle Link
mobile tablet desktop
hometogo.de hometogo.com… …
e001v1… e002v1 …e001v2
test_audrius_feature ……
Workflow
master
feature
stage
*1
*2 *2
*3 *4
*5
*1 - not risky change (toggle off); *2 - more risky changes;

*3 - hot-fix

*4 - small change

*5 - stage corrupted, re-create from master
WITHOUT DATA
YOU'RE JUST A
PERSON WITH AN
OPINION
A/B testing
• Random assignment @ backend
• No reloads / flickering
• External tracking
• Testing business and technical features
with same conditions
• Simple experiment filtering / allocation
Experiment targeting
• Locale
• new / returning
• traffic type
• Devices
Symfony DI Container
Symfony DI Container
Factory
Setting aware service
Twig Extension
Js Toggle
Setting aware service
Strategy
Composite
Performance
Database
Cleanup
• Deprecation + Scrutinizer CI
• Launch Ticket (Jira)
• Reindexing, memory cleanup
Risk control
• App Monitoring
• Log Extension
• Continuous acceptance tests
Risk control
• App Monitoring
• Log Extension
• Continuous acceptance tests
https://github.com/ongr-io/SettingsBundle
THANK YOU

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Feature Toggle: HomeToGo Use Case