Rethinking Java CRUDs With Event Sourcing and CQRS Patterns
Traditional CRUD systems store only the current state of an entity. When a record is updated, the previous value is overwritten and lost forever. Event Sourcing inverts this model:...
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Traditional CRUD systems store only the current state of an entity. When a record is updated, the previous value is overwritten and lost forever. Event Sourcing inverts this model:...
Originally appeared on Hi, we're Arkency.Storing data as a sequence of events - RubyConfAt lightning talk supplement This post originated from the lightning talk and the discussion...
Most Java tutorials reach for Axon before explaining the moving parts underneath it. This is the framework-agnostic treatment — the event store, the snapshot problem, schema evolut...
Both patterns produce a stream of state changes — yet they sit at entirely different layers of your stack, solve different problems, and carry very different costs. Here is how to...
Quorum is an incident command plane built on Amazon Aurora DSQL. The failover story lives in another post. This one is about a narrower question that turned out to be the foundatio...
Modern software systems don’t behave like traditional request–response applications anymore. As applications grow into distributed, real-time, and globally scaled systems, direct c...
Originally appeared on Hi, we're Arkency.RailsEventStore 2.19: Starting Gun for 3.0 RailsEventStore 2.19.1 is out — grab that one, not 2.19.0 (more on why below). This release is...
Fast Kafka consumers are not automatically safe Kafka consumers. A Java service can keep up with partitions, restart cleanly, and still leave the business in a state that is hard t...
Event-driven architecture promises scalability, but in Java-based real-time systems the tradeoffs only surface in production. Drawing on a Java/Kafka contact center platform handli...
it's always something you know
A decision-making framework for teams standing at the architectural fork between REST APIs and event streams. Almost every architecture discussion eventually arrives at the same fo...
Core Features pg-cdc is not just replication. pg-cdc streams Postgres Write Ahead Logs(WAL) out of production Postgres into typed, immutable, time-travelable Iceberg tables on S3...
Most developers approach XRPL event monitoring like it's a simple polling problem. They spin up a script that checks wallet balances every few minutes, maybe set up a cron job to s...
Originally appeared on Hi, we're Arkency.Ingress is not the owner of the invariant A polemic with Callbacks Are Not Invariants by Brandon Weaver. A disclaimer: I’m a RailsEventSt...
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