Stress-free software releases

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 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 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

Stress-free software releases

Stress-free software releases

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