Read Model & Projection - Githubissues

ryan-mars / stochastic

TypeScript framework for building event-driven services. Easily go from Event Storming → Code.

MIT License

6 stars 1 forks source link

Read Model & Projection #6

Open ryan-mars opened 3 years ago

ryan-mars commented 3 years ago

Read Models

Read models are an interesting twist in modelling style: they provide the information needed in order to take a given decision. ... the design of Read Models is driven by the needs of a consequential decision.

Software Model

Illustration ©️ Avanscoperta

[x] has a projection function for each of the events it subscribes to
[x] projection function arguments: client for the read model store (or perhaps an identifier such as an ARN), and the event
[x] subscribes to the appropriate events
[x] has r/w permissions on the read model store
[ ] helper implementations of DynamDBReadModel and ElastiCacheReadModel
[x] Sample code for read models and projections