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Questions - eventual-consistency

Eventually consistent DB : How to deal with relational data?

So let's say we have microservices that uses an event broker to communicate each other. To secure sovereignty of data, each microservices has denormalized documents. So whenever the data is changed, f...

Peter

events

microservices

eventual-consistency

Votes: 0

Answers: 1

Latest Answer

I would revisit the microservices decoupling and would ask a question - who is the source of truth for each type of data? You'll probably arrive to one service owning documents and that service will b...

AndrewR

Cassandra counter - consistency

I have a doubt about counters. I'm searching on the web but I'm not able to find an answer. Let's suppose we're working with a COUNTER across multiple datacenters, and let's suppose we're working usin...

Carlo De Vita

cassandra

cassandra-3.0

distributed-system

eventual-consistency

Votes: 0

Answers: 0

DDD: How to design history aggregate in ecommerce

I have Buyer, Product, Seller, and Offer. The buyer offers to buy a product and the seller either accepts the offer or declines it. I also have the following invariants: Buyer can't make an offer for ...

manfrom

aggregate

domain-driven-design

clean-architecture

eventual-consistency

Votes: 0

Answers: 2

Latest Answer

You are over-engineering your problem. Get back to your use cases: A buyer makes an offer to buy a product A seller accepts an offer You could model that with a single aggregate, Product (root) + Of...

ArwynFr

How do I properly design Aggregate in DDD, Event-sourcing

Suppose I want to make an e-commerce system. I have 2 aggregates here ProductAggregate and UserAggregate. Product aggregate contains productId, price. User aggregate contains userId and balance. Here'...

Big boi.

javascript

microservices

domain-driven-design

event-sourcing

eventual-consistency

Votes: 0

Answers: 1

Latest Answer

First of all, regarding your handle, you're not stupid :) A few points: In many situations you can query the read model even though there's eventual consistency. If you reject a command that would h...

Levi Ramsey

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