#EventDriven

I've just released Ontologic 1.5! 🎉 This version adds support to run Workflows that shapes like a...

From Dev.to - opensource: Kafka Under the Hood: A Visual Guide to KRaft and Internal Architecture (2026)

There is a moment in every codebase where someone draws a box on a whiteboard, labels it EventBus,...

Designing intelligent systems that detect transport issues instantly and respond in real time Modern...

Event Sourcing has always been an interesting subject to me. I used to work at a manufacturing...

Design event-driven systems with practical patterns — event sourcing, CQRS, sagas, and choosing the right message broker.

From Dev.to - nestjs: Event Emitters in NestJS Explained: Practical Scenarios and Best Practices

Introdução Os sistemas com agentes de IA estão evoluindo rapidamente. Hoje já vemos...

Dans les systèmes basés sur des commandes et/ou des événements (CQRS, CQS, Event Sourcing,...

From Dev.to - tutorial: Beautiful Cities in Europe Travel: Discover Europe’s Most Stunning Destinations

Implementing asynchronous event streaming for multi agent systems exposes severe limitations in...

Introduction Frontend applications have grown from simple pages into complex systems with...

An orchestrator-driven saga in Python with idempotent compensations for the reserve, charge, ship, notify flow your retries keep half-finishing.

Push, email, SMS, in-app. Fanout, dedup, per-provider rate limits, DLQs. The boring patterns that decide whether your launch survives Reddit.

A poison message stalls the main queue at 5:47 PM. The DLQ pattern is the 200 lines that keep your weekend yours.

Picture a replayed Kafka batch that charges customers twice. The fix is a 60-line idempotency wrapper. Here is the contract every event consumer needs.

A CRUD app does not need two models. The four scenarios where CQRS earns its complexity, and the costs you sign up for the moment you split.

The dual-write problem in concrete terms, then a 200-line transactional outbox in Go: schema, atomic write, relay, idempotency, and the gotchas.

Introduction A message queue is an essential component in a distributed system, allowing...