Demux

Offloads queries to databases like Postgres, enabling complex SQL joins and aggregations that are impossible with direct blockchain queries, as highlighted in the README's discussion on scaling front-end data needs.

Updater functions process blockchain actions to update datastores in a replayable manner, ensuring the persistence layer can be regenerated from the blockchain for auditability, a core benefit mentioned in the philosophy.

Effect functions allow triggering asynchronous events like sending emails or transactions based on blockchain actions, integrating non-deterministic systems while keeping core state deterministic, as described in the data flow.

Derives all application state from the blockchain as a single source of truth, eliminating duplicate state management and enabling full audit trails, a key qualification from the overview.