How does OFBiz integrate with Apache Solr for product search?

OFBiz ships an optional integration that indexes product data into Apache Solr so storefront searches don't run expensive relational queries - multi-table joins across products, categories, features, and prices - on every keystroke.

A dedicated service reads product-related entities and pushes documents to a configured Solr core or collection, triggered either on demand (a full reindex) or incrementally via SECA rules that react to product data changes, keeping the index reasonably current without a full rebuild after every edit.

Storefront search screens then query Solr instead of the database directly, getting fast faceted search (by category, brand, price range) and relevance ranking that would be considerably harder to replicate with plain SQL queries against the Entity Engine.

Because Solr is a separate service, it must be configured and reachable independently - it doesn't replace the Entity Engine as the system of record, only as a specialized read-side search index.