📖 Read Models

Even with snapshots, using the event store for querying needs (like displaying data in a web page) would be slow and inefficient, if not impossible depending on the access pattern.

In Event Sourcing, it is common to use a special type of message bus listener called projections, responsible for maintaining data specifically designed for querying needs, called read models.

Read models allow for faster read operations, as well as re-indexing. Keep in mind that they are eventually consistent by design, which can be annoying in some use cases (like opening a resource page directly after its creation).

Read models are not implemented in Castore yet, but we have big plans for them, so stay tuned 🙂