Observatio - Speaker Deck

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Observatio Learn from our mistakes

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Why should you believe me? ● Started > 14 years ago (PHP4!) ● PHP7 soon™ ● 1 codebase, 2.5MLOC of PHP, 6.5MLOC in total ● > 1500 customers, > 20k websites, > 800k users ● 4M requests per hour ● 2 Server racks @True ● 4 years of scrum, 5 teams ● Plenty of room for mistakes

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What will we be talking about? ● Doing the right thing ● Doing things right ● Doing things a little bit better every time

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Doing the right thing Requirements

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A story 1. Doing the right thing

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The user must be able to export gifts 1. Doing the right thing

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Meet Mark the marketing manager! 1. Doing the right thing

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As Mark the marketing manager, I want to export gifts, so that I can send a mailing 1. Doing the right thing

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As Mark the marketing manager, I want to send a mail to customers with a big account, so I can tell them how we used their gifts to improve the world 1. Doing the right thing

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As Mark the marketing manager, I want to tell customers with a big account how we used their gifts to improve the world, so they know they made a difference 1. Doing the right thing

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Meet Claire the big spender customer! 1. Doing the right thing

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As Claire the big spender customer, I want to know how my gift helped improve the world, so I know I made a difference 1. Doing the right thing

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P S S 1. Doing the right thing

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P S S S S S S S S S S Export 2pt to create 2h/w to operate 1. Doing the right thing Automated mailing 5pt to create 0h/w to operate

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When writing stories ● Ask ‘why’ at least five times ● Whom does the problem or opportunity really concern? ● Forget must and want; problems and opportunities ● Stories are not about tech or money ● Stories are about the domain, in terms of the domain ● Persona’s are hard; use data ● Estimates are hard; don’t overthink 1. Doing the right thing

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When solving stories ● Stories are the beginning of a conversation ● Sprint planning is for picking solutions ● ... but nothing is set in stone ● Is your Product Owner there? 1. Doing the right thing

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Doing things right Craftsmanship

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2. Doing things right

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2. Doing things right

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Who is your audience? 2. Doing things right

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Don’t let it come this far

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2. Doing things right

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2. Doing things right

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Bad code should hurt your eyes 2. Doing things right

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Imitatio and emulatio 2. Doing things right

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Patience and humility

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Doing things better AKA Continuous improvement

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Seven steps for beginners (like me) In 25 minutes: ● Create/update and prioritize your to-do list ● Write your commit message ● Make it work ● Commit ● Make it beautiful ● Commit ● Cross off item from to-do list Rinse and repeat 3. Doing things better

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Feature branches 3. Doing things better

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3. Doing things better

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Code reviews 3. Doing things better

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Lightning talks 3. Doing things better

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3. Doing things better

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Concluding So what have we learned, really?

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Thank you! Procurios www.procurios.com @Procurios @ProcuriosDev Pim Elshoff @pelshoff https://joind.in/talk/db568