Vinted life embetterment

Life Embetterment with Hundreds of Deployments

a Week

Friday, October 11, 13

Life Embetterment with Hundreds of Deployments

a Week Day

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Fall 2012

7 Developers

1 DevOps

150 M page views / month

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Using GitHub

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Abusing GitHub

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Tests!

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Test coverage ~30%

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Tests run 8-12 min

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Deploying untested code

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No concurrent deployments

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One Friday night...

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Slow feedback

Fragile releases

Cumbersome process

Friday, October 11, 13

Slow feedback

Fragile releases

Cumbersome process

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statsd / graphite

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Slow feedback

Fragile releases

Cumbersome process

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Strange coincidence...

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When shipping new code

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When shipping new codeWhen shipping new code, always add tests

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When modifying old code

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When modifying old codeWhen modifying old code, always add tests

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Always add tests

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Eliminate random failures

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Pull Requests

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Release more often

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TextText

Git diff between currently deployed code and what will be deployed:

https://github.com/vinted/core/compare/d841b93...1167740

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TextText

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Slow feedback

Fragile releases

Cumbersome process

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Prepare release: 2 min 43 sec

Install gems: 42 sec

Stop jobs: 58 sec

Migrate database: 15 sec

Sync translations: 3 min 20 sec

Start jobs: 23 sec

Restart app: 24 min 12 sec

Total: 32 min 33 sec

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Build on steroids

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Split builds

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Parallel tests

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Build on fast hardware

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Build on fast hardware

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GC tuning

Ruby 2

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Use better tools

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Thin -> Unicorn

10x faster deploys

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Online database migrations

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Put your build server to work

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Prepare everything upfront

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Deploy with Jenkins

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Auto deploy

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Instant feedback

Reliable releases

Automatic process

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Fall 2013

12 Developers

2 DevOps

500 M page views / month

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[13:09:08] Vinc:

Inbox is not under HTTPS!

[13:25:38] Vinc:

Yes, I see HTTPS, Thanks!

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Mindaugas Mozūrasgithub.com/mmozuras@mmozuras

Tomas Varaneckasgithub.com/spajus@spajus

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We’re hiring!

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Thank You!

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