Scaling out architectural decision making OReilly Software - - PowerPoint PPT Presentation

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scaling out architectural decision making
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Scaling out architectural decision making OReilly Software - - PowerPoint PPT Presentation

Sep 05, 2022 536 likes •1.1k views

@patkua Scaling out architectural decision making OReilly Software Architecture Conference Berlin (November 2019) The first bank youll love @patkua Banking, this beautiful @patkua Chief Scientist, former CTO #leader #coach

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Scaling out architectural decision making

@patkua O’Reilly Software Architecture Conference Berlin (November 2019)
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The first bank you’ll love

@patkua
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Banking, this beautiful

@patkua
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SLIDE 4 #leader #coach #architect #developer #life-long-learner #author #cto

We’re hiring in Barcelona, Berlin, & Vienna & NYC! https:/ /n26.com/jobs/ Chief Scientist, former CTO

@patkua
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SLIDE 5 thekua.io/evolarch thekua.io/twtl thekua.io/retrobook

Chief Scientist, former CTO

@patkua
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Course: Tech Lead Skills for Developers

http:/ /thekua.io/tech-lead-course @patkua
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Level Up

A curated newsletter for leaders in tech http://levelup.thekua.com

@patkua
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What did we learn? What did we do? Why scale decision making?

@patkua
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SLIDE 9 @patkua

Why scale decision making?

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Our context: Hypergrowth

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SLIDE 12 @patkua
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SLIDE 13 @patkua
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SLIDE 14 @patkua

Berlin Barcelona New York

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SLIDE 15 @patkua

Hypergrowth feels like you’re building the rocket as its flying

“

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SLIDE 16 @patkua
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SLIDE 17 @patkua
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SLIDE 18 @patkua

Decisions

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SLIDE 19 @patkua

Decisions

Design Architecture

Easier to change Harder to change
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SLIDE 20 @patkua

Decisions

Easier to change Harder to change BE <-> FE error standard Sync versus Async Standard “across” services Code layout within a service Method/function design Library
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SLIDE 21 @patkua

Decisions

Decision Quality Buy-in Time

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Decisions

Fast AND good

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SLIDE 23 @patkua

Decisions

How we used to make decisions…

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Pain Points

Meetings Information Locations Visibility
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What did we do? Why scale decision making?

@patkua
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SLIDE 26 RFCs Working Groups Architecture Guild

Practices

@patkua
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SLIDE 27 @patkua

equest

  • r
  • mments

R F C

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SLIDE 28 @patkua RFCs
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SLIDE 29 @patkua RFCs

Introduced Organic adoption Confusion

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SLIDE 30 @patkua

Refactoring

RFCs
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SLIDE 31 @patkua RFCs

Refactoring

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Refactoring

RFCs
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?

RFCs
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83

RFCs
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SLIDE 35 @patkua RFCs Working Groups Architecture Guild

Practices

@patkua
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SLIDE 36 @patkua

Working Groups

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SLIDE 37 @patkua Working Groups
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Design by Commituee

NO

Informed Consulted Speed

Working Groups
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SLIDE 39 @patkua Working Groups Listening for pain points Ofuen about gaps Many perspectives Multiplier
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SLIDE 40 @patkua Working Groups

Example: Error Handling

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SLIDE 41 @patkua Working Groups

Example: Error Handling

iOS Android Web Internal Service A Service B Service C Service D
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SLIDE 42 @patkua Working Groups

Example: Error Handling

JSON? Structure What details? Already translated?

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SLIDE 43 @patkua Working Groups

Example: Error Handling

Result: Adoption of RFC7807

  • Problem details object (type, status, detail, userMessage, instance)
  • Content-Type = application/problem+json
  • Only used for 400 and 500 responses
  • Use of 207 (batch request/response)
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SLIDE 44 RFCs Working Groups Architecture Guild

Practices

@patkua
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SLIDE 45 @patkua

Architecture Guild

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SLIDE 46 @patkua Architecture Guild

What?

  • Representatives across the entire tech
  • Entire company wide cross cutting topics
  • Decision making authority
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SLIDE 47 @patkua Architecture Guild

Who?

iOS Android Web Security Data Internal Tools SRE BE Segment Location (BCN, NYC) QE Staff Engineers

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Example: Updating Tech Radar

Architecture Guild
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SLIDE 49 @patkua

Example: Security Scanning in CD Pipe

Architecture Guild
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What did we learn? What did we do? Why scale decision making?

@patkua
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SLIDE 51 @patkua

Learnings

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SLIDE 52 @patkua

Pain Points

Meetings Information Locations Visibility

Learnings

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SLIDE 53 @patkua

Learnings

Listen Observe Refactor

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SLIDE 54 @patkua

Learnings

Listen Observe Refactor

Iterate

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SLIDE 55 We’re hiring in Barcelona, Berlin, Vienna & NYC! https:/ /n26.com/careers/

Questions? @patkua