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Self Contained Systems with Jan Stępień @janstepien
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@innoQ @cljmuc
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Func%onal programming Genera%ve tes%ng So5ware architecture
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Func%onal programming Genera%ve tes%ng So5ware architecture of distributed web applica%ons
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μservices in all shapes and sizes 1. Ne0lix 2. Fred George 3. Serverless 4. Bounded contexts
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a μservice is a fairly broad term 1. μservices must be independently deployable
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If you reach this state, there is no denying that you have actually built a distributed monolith. — Daniel Westheide The perils of shared code
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Self-Contained Systems
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An autonomous web applica9on
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Encompasses UI, logic, and data
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Owned by a single team
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Minimised shared infrastructure
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Systems share no business code
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Aside from a web UI,
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Aside from a web UI, an op9onal API
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Loose integra9on and no shared UI
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Asynchronous communica9on
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Why should we care? — I’m asking
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Higher reliability and lower latency
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Loose UI integra9on
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Integra9on through links
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Integra9on through transclusion
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Domain-driven separa9on
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Local decisions
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Independence and replaceability
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Gradual migra9on
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An e-commerce example Search Products Cart Payment Home
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Self Contained Systems @janstepien janstepien.com