Apache Solr is an open-source enterprise search platform built on Lucene. It supports full-text search, faceted navigation, analytics, and distributed indexing for large-scale websites.

Solr is fully available and commonly self-hosted in China. It integrates with domestic cloud infrastructure and no cross-border issues exist.

The information regarding service availability in China is provided for general reference purposes only. Due to the dynamic nature of network conditions and regulatory environments, the actual accessibility of these services may vary over time and by location. Users are advised to verify the current status independently.