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Tosho Trajanov
November 10, 2019
Technology
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Stress-free software releases
Tosho Trajanov
November 10, 2019
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Transcript
Stress-free software releases BGPHP 2019, Sofia
@TsTrv CTO Adeva - An Exclusive Developers Network Fully-distributed network
Worked with startups and Fortune 500 companies
@TsTrv Building strong engineering processes
@TsTrv Nirvana in software engineering
@TsTrv State of the application ー Legacy, enterprise application built
in PHP ー Being developed for over 10 years ー 0% test coverage ー 10 engineers - to keep it alive
@TsTrv The problems ー Unable to ship as fast as
we needed ー Never ending bug fixing cycles ー Full-regression testing took 3-4 weeks ー Releases once monthly ー Scheduled on weekends
@TsTrv Formula for stress and burnout
@TsTrv Continuous Everything
@TsTrv
@TsTrv Objections ー Complexity ー Risk ー Control ー Habit
@TsTrv Continuous Everything
@TsTrv Continuous Everything… Nirvana
@TsTrv Continuous Everything… Nirvana
@TsTrv Continuous Everything… Nirvana
@TsTrv Continuous Everything ー If you fail, you fail small
ー If something breaks, you know to fix immediately ー Fewer bugs ー Release new features faster ー Reduce Costs
@TsTrv What could potentially go wrong?
@TsTrv What could potentially go wrong right?
@TsTrv Legacy code ー Strangler Pattern ー Branch By Abstraction
Technique
@TsTrv Strangler Pattern
@TsTrv Branch By Abstraction
@TsTrv Automated Tests
@TsTrv Automated tests ー Assume legacy works flawlessly ?! ー
Utilize new modules to Increase the code coverage
@TsTrv Pipeline
@TsTrv Deployment vs Release ー Decoupling ー Feature Toggles –
Dark Launching – Phased rollout
@TsTrv
@TsTrv Deployment Strategy ー Blue Green ー Canary deployment
@TsTrv Blue Green Deployment
@TsTrv Blue Green Deployment
@TsTrv Canary Deployment
@TsTrv Mindset ー Everyone should participate ー Not a DevOps
work only ー Continuous improvement, day by day
@TsTrv Actions ー Wrapped up the legacy code ー Faked
automated tests for the legacy ー Identified pipeline ー Decoupled releases from deployment ー Created a culture of continuous improvement
@TsTrv Wins ー Release code to production multiple times daily.
ー Production bugs lowered by 80% ー From bug report to deploy < 30 mins ー No more weekends work
@TsTrv Always strive for continuous improvement, instead of perfection.
@TsTrv Thank you