projection▌

Build read models and materialized views from event streams using projection patterns. \n \n Covers four projection types: live (real-time subscriptions), catchup (historical processing), persistent (with checkpointing), and inline (strong consistency) \n Includes five ready-to-use templates: basic projector framework, order summary projection, Elasticsearch search indexing, daily sales aggregation, and multi-table customer activity tracking \n Emphasizes idempotency, transactional consistency,