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frequent releases & major changes

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codingfearlessly.com mmozuras mmozuras

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VINTED

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MAKE SECOND-HAND THE FIRST CHOICE WORLDWIDE

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team evolution

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everyone together BE Web BE BE

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functional BE BE BE BE Web Web iOS And And And iOS iOS backend web mobile

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cross-functional gem yo secret â– pants might magic

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cross-functional

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people with all skills

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people with all skills

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people with all skills

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backend web design iOS android analysis

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backend web design iOS android analysis operations

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teamwork

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releases

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releases in the old days by another department

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releases today by the team

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releases today at Vinted hundreds per day

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releases today at Vinted hundreds per day

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+19 -2

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how to release major changes?

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+2000 -42

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how to release major changes?

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piece by piece?

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piece by piece?

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long release cycles?

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long release cycles?

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long-lived branches?

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long-lived branches?

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separate release from deployment?

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release make feature/code available for users

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deploy put feature/code in production

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separate release from deployment!

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science & feature flags & ab tests

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science

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sphinx -> elasticsearch

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major refactoring

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trust the tests?

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trust the tests?

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run old & new code

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run old & new code log differences

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run old & new code log differences remove differences

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github/scientist

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duration matches mismatches

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sphinx -> elasticsearch

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feature flags

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feature flags/toggles/switches/flippers

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glorified if statement

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just turn it on?

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ab tests

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admin svc-ab svc-1 svc-2 svc-3 data

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admin svc-ab svc-1 svc-2 svc-3 data write ab config

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admin svc-ab svc-1 svc-2 svc-3 data read ab config

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admin svc-ab svc-1 svc-2 svc-3 data write events

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admin svc-ab svc-1 svc-2 svc-3 data

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svc-ab svc-1 svc-2 svc-3 android iOS

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vinted/ab vinted/ab-ios vinted/ab-java

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release a feature to a percentage

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release a feature to half of a city

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release to everyone

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major changes

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science & feature flags & ab tests

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separate release from deployment

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thanks! mmozuras mmozuras