eventual consistency ftw david craelius, cto Klarna in short - - PowerPoint PPT Presentation

Jan 30, 2023 •118 likes •347 views

eventual consistency ftw david craelius, cto Klarna in short - Independent, founders still majority owners - Delivering online payments not built on top of the traditional VISA/MC stack - Aim to double each year - > 100M turnover 2012

eventual consistency ftw david craelius, cto
Klarna in short - Independent, founders still majority owners - Delivering online payments not built on top of the traditional VISA/MC stack - Aim to double each year - > € 100M turnover 2012 & we’ve always been profitable - 800 FTEs (and counting) - Investors such as Sequoia Capital, DST, General Atlantic and Atomico. - Functional programming junkies .d 2
Klarna vision zero friction for consumers .d 3
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… .but taking 100% of our merchants check-out requires a close to 100% availability of our service. fuck. .d 10
my view on true UX: .d 11
availability is no longer optional .d 12
K2 -our migration strategy out of the “dark pit of hell”*. *our technical debt a.k.a. the monolith .d 13
K2 target: 99.99% availability 24/7 utilizing a lean, “no master” pattern. .d 14
K2 routing @cannedprimates @uwe_ @massemanet .d 15
K2:FRED architecture @cannedprimates @uwe_ @massemanet .d 16
K2:FRED infrastructure @cannedprimates @uwe_ @massemanet .d 17
A service: Klarna Payment GW .d 18
no master (eventual consistency) && realtime credit scoring && credit card processing = wtf? you dumb? .d 19
We expect things to fail .d 20
K2:FRED Graceful degradation of services .d 21
Q? .d 22

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