https://letsbuildsolutions.com/blog/system-design/how-elasticsearch-works-internally-inverted-indexes-lucene-segments-and-distributed-search-execution/
How Elasticsearch Works Internally: Inverted Indexes, Lucene Segments, and Distributed Search...
A deep dive into Elasticsearch internals covering Lucene's FST-based inverted index, the immutable segment write model with near-real-time refresh and merge...
inverted indexesdistributed searchelasticsearchworksinternally