~/talks

Oskar Dudycz

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Let's build the worst Event Sourcing system!NDC London 20242024-01-29
Project France deliberately replaces an event store with Kafka-style queues and defaults, causing stale reads, lost idempotency, and broken ordering under…
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Practical Event Sourcing with Marten and .NETNDC Oslo 20232023-05-22
Demoed a support-ticket domain implemented with Marten on Postgres using JSONB, showing real code that builds events, applies them to in-memory aggregates, and…
Talk on
Let's build event store in one hour!NDC Oslo 20222022-09-26
During the session, I'll show how to build your own event store with Relational database as the storage. What's more I'll do it in only 1h! While building…
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How to model event-sourced systems efficientlyDDD Europe 20222022-06-20
Event sourcing works but long per-entity streams cause IO, versioning and cognitive costs; teams slice by business life cycles (example: turn an account into…
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Event-driven Revolutions: From Monolith to Event Sourcing in Practice4Developers 2022 Online2022-04-04
A Node.js + TypeScript walkthrough that migrates a working monolith to an incremental event‑sourced design using four concrete events (OpenedCart, ItemAdded…
Talk in Polish on
Bring Me Problems, Not Solutions!4Developers 20212021-05-24
The talk discusses the common tension between developers and business stakeholders and argues that business should present problems rather than prepackaged…
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CQRS is simpler than you think with C#9 and .NET 5!4Developers 20212021-05-24
Claims CQRS is much simpler when using .NET 5 and C#9, implemented here without Event Sourcing or DDD by building a working WebAPI (about 167 lines of code)…
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.NET: Practical Event Sourcing with Marten4Developers 20202020-09-14
Shows a concrete .NET implementation that uses Marten on Postgres to store immutable events as a JSONB event table (id, type, stream id, version, timestamp…
Talk on
Application Architectures: The shadows and highlights of Event Driven Design4Developers 20202020-09-14
The talk examines event-driven design for modern scalable systems, naming concepts like idempotency, eventual consistency, and at-least-once delivery, and…
Talk in Polish on
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