https://wid-blog.github.io/en/tags/distributed-systems/Recent content in Distributed Systems on wid's blogHugoenSat, 09 May 2026 00:00:00 +0000https://wid-blog.github.io/en/posts/tech/architecture/microservices-architecture/Sat, 09 May 2026 00:00:00 +0000https://wid-blog.github.io/en/posts/tech/architecture/microservices-architecture/MSA is a decision about which criterion to use to decompose the system. Domain boundary, data ownership, scale pattern, failure isolation — the chosen criterion creates the service boundaries, and those boundaries decide communication and data in turn.https://wid-blog.github.io/en/posts/tech/architecture/event-sourcing-and-cqrs/Thu, 07 May 2026 00:00:00 +0000https://wid-blog.github.io/en/posts/tech/architecture/event-sourcing-and-cqrs/ES and CQRS address how a system’s source of truth is shaped and how its views are separated from it. Adoption cost spreads across the system, so I lean toward adopting only when the value can be stated explicitly.https://wid-blog.github.io/en/posts/tech/architecture/distributed-transactions/Tue, 05 May 2026 00:00:00 +0000https://wid-blog.github.io/en/posts/tech/architecture/distributed-transactions/Distributed transactions are about how a single ACID transaction decomposes across services and how its pieces are reassembled. The roles and trade-offs of 2PC, Saga (Choreography vs Orchestration), and Outbox.https://wid-blog.github.io/en/posts/tech/infra/kafka-fundamentals-kraft/Thu, 22 Feb 2024 00:00:00 +0000https://wid-blog.github.io/en/posts/tech/infra/kafka-fundamentals-kraft/Core Kafka concepts (topics, partitions, consumer groups, replication) and the background behind KRaft mode, which removes the ZooKeeper dependency.