Allard Buijze
CQRS and Event Sourcing without the pixie dust
#1about 3 minutes
The problem with traditional layered architectures
Traditional layered architectures often evolve into a "big ball of mud" monolith that is difficult to change and maintain.
#2about 3 minutes
Why microservices often become a distributed monolith
Applying monolithic development practices to microservices results in a distributed "big pile of mud" instead of a truly modular system.
#3about 6 minutes
Using events to decouple services in architecture
Events can decouple services by allowing components to publish facts without knowing their consumers, but this alone doesn't solve underlying architectural issues.
#4about 8 minutes
Differentiating event sourcing from event streaming
Event sourcing involves a component using its own past events to make future decisions, unlike event streaming where one component simply consumes another's events.
#5about 4 minutes
Introducing CQRS to solve event sourcing's limitations
CQRS separates the command model for handling changes from the query model for providing current state to address the limitations of pure event sourcing.
#6about 7 minutes
Moving from event-driven to message-driven thinking
A truly message-driven architecture requires discipline and uses distinct message types like commands, events, and queries for different communication intents.
#7about 12 minutes
Demo: Refactoring a monolith into microservices live
A live demonstration shows how an application built with location transparency can be refactored from a monolith into microservices by simply moving code between modules.
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