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to go faster but how? slow down PRACTICES TO BUILD SOFTWARE FASTER THAN EVER LEMi ORHAN ERGiN co-founder @

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to go faster but how? slow down PRACTICES TO BUILD SOFTWARE FASTER THAN EVER LEMi ORHAN ERGiN co-founder @ speakerdeck.com/lemiorhan @lemiorhan LEMi ORHAN ERGiN agile software craftsman co-founder @ Craftbase ex Sony, eBay, acm, iyzico founder of Turkish Software Craftsmanship Community

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being fast is vital not only being first on the market is important, but also responding to customers by adding new features and eliminating bugs fast keep customer satisfaction high. in so!ware world

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but we all have a problem with speed we assume going faster and smarter and efficiently is related with giving deadlines for the targets. we think that we go faster by working more and with more people. therefore we either add new people or do overtime to gear up production.

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rushing makes us neither faster, nor more productive rushing increases stress, distracts focus and destroys productivity. we need creativity, effectiveness, and focus instead.

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so!ware development is damn hard & complex we cannot get rid of complexity. we have to live with it. the need for speed creates an unstable, unsustainable environment, makes us stressed, less focused and less productive. it just don’t work.

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incompetency is reality deadlines ignores delivery times have direct dependency with people, the efficiency of processes and the quality of output. and developers give deadlines for themselves, without any real need. are imaginary team capacity velocity estimation deadline masterplan fixed hours

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we got legacy so!ware and inefficient processes the pressure of deadlines combining with incompetency leads to legacy so"ware, the dead-end for a working so"ware. at the end of the day

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LEGACY SOFTWARE works perfectly validated by unit tests already deployed to prod but it has a bad smell do you get it?

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LEGACY SOFTWARE

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SLOWING DOWN the only way of going faster with sustainable pace is

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Professionalism 
 and Craftsmanship Adaptation and Efficiency Automation and Quality 3 MAIN AREAS OF SLOWING DOWN PEOPLE PROCESS PRODUCT

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3 MAIN AREAS OF SLOWING DOWN PEOPLE PROCESS PRODUCT 11 practices to slow down, take a deep breath and invest on mastery

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hire better talents Talent hiring is the most critical function in your company Look for passion, discipline and motivation Do not allow ego enter the team Make them believe what you believe Model the behavior you want to see PEOPLE 1

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do together Never allow silos to occur Do in pairs and mobs, review together Sit together, closely Let the responsibility shared Define team standards PEOPLE 2

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practice together Organize code retreats, radoris and coding dojos Spend 30 mins of each working day for practicing Force yourself to use shortcuts, and console Dedicate time for OSS and communicate with the community PEOPLE 3

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BROWN BAG SESSION PEOPLE

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BROWN BAG SESSION PEOPLE GRAND RETROSPECTIVE

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PEOPLE learn together Organize Brown Bag / Lunch & Learn Sessions Gather feedback via Team & Grand Retrospectives Be a speaker and give back to the community Document what you have learnt to a central wiki Invest in yourself, spend time and money for your career BROWN BAG SESSION GRAND RETROSPECTIVE 4

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do plan and revise often Plans are nothing, but planning is everything Create multi feedback loop channels, like review & demo Never give up daily alignment Have short iteration length Define short term goals and long term purposes PROCESS 5

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collect data and analyze Visualize processes, successes and failures Monitor SDLC, CI/CD metrics Allow every developer access product & code metrics Make decisions based on data, not gut feelings PROCESS 6

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PROCESS eliminate waste Detect waste in the office, in code and in processes Follow the boy scout rule Obey your definition of done and eliminate 99% done tasks Never allow long living branches Do not verify your code by manual testing Developers documents a world unintentionally 7

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push the defects down Stop building the features and focus to eliminating bugs Fix bugs after reproducing via tests Continuous bug fixing and support: Batman and Robin Use pull requests and master code review capabilities Never deploy unreviewed code to production PRODUCT 8

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release frequently Commit early, commit often, perfect later, publish once Trunk based development with Feature Toggling Devops is not having a cloud expert in team, know it Version everything, everything you write Decrease the need for manual testing PRODUCT 9

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PRODUCT

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test first and refactor Develop by TDD, have just enough tests and simple design Stop calculating code coverage Use 20% of time for eliminating technical debt Delete your brittle tests, rewrite tightly coupled code Multi level testing helps you validate functionalities Mono repository is for refactoring PRODUCT 10

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PRODUCT HELL DEPENDENCY OF MICROSERVICES

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PRODUCT

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ports business adapters mysql adapter stripe adapter rest api web ui domain

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ports adapters domain 3rd party apps command line soap calls admin gui batch jobs mobile apps other hexagons cache provider elastic search mail server database sms provider message queue other hexagons business mysql adapter stripe adapter rest api web ui

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ports adapters notification payment billing order basket restaurant scheduling caching search mail account messaging stripe adapter rest api mysql adapter web ui domain business

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a SEARCH

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a c SEARCH PAYMENT

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c a SEARCH PAYMENT ACCOUNT

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keep your design simple Any design decisions taken before it is required is wrong Yeah, microservices are great. But are you ready for it? Loosely coupled, high cohesive designs by Ports & Adapters Stop doing big upfront-design Follow the 4 rules of simple design PRODUCT 11

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PEOPLE PROCESS PRODUCT

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Professionalism 
 and Craftsmanship PEOPLE hire better talents do together practice together learn together Adaptation and Efficiency PROCESS do plan & revise often collect data & analyze eliminate waste Automation and Quality PRODUCT push defects down release frequently test first & refactor focus on simple design

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Working software does not have to be well-crafted. Only good professionals can build well-crafted software. Only well-crafted software lets you build features faster than ever.

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@lemiorhan LEMi ORHAN ERGiN Working software does not have to be well-crafted. Only good professionals can build well-crafted software. Only well-crafted software lets you build features faster than ever.