2022 年 2 月 - CQRS
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## CQRS 是什麼

https://martinfowler.com/bliki/CQRS.html

## Event Sourcing

### 範例

class Event < Hash; end
class Command; end
class EventStore < Array; end

# 待補

### Rails

- [Rails Event Store](https://railseventstore.org/)
- [sequent](https://www.sequent.io/)

### 延伸：Reactive 機制

## Domain-Driven Development

### 下次主題

* 筆記/知識管理工具？ -> 0
* flutter -> 1
* NFT/smart contract -> 2
* next.js: https://nextjs.org/docs/basic-features/data-fetching/overview -> 1
* **prism: https://github.com/prism-rb/prism -> 3**