Concepts

The pages in this section explain the three ideas that form the core of Funes: events, event streams, and projections. They favor the what and why over the how. If you are new to Funes, or want to understand what each piece is for before you write code, start here.

• Event — the immutable fact at the heart of the system, written in stone
• Event Stream — a sequenced group of events under one stream ID
• Projection — derive state from an event stream with the interpretations DSL

---

Table of contents

• Event
• Event Stream
• Projection