Read Process

Architecture Digest

Feb 18, 2021 · Big Data

Elasticsearch Write, Read, and Search Processes: Underlying Mechanisms and Lucene Inverted Index

This article explains how Elasticsearch handles data ingestion, retrieval, and full‑text search by describing the roles of coordinating, primary, and replica nodes, the refresh‑commit‑flush cycle, segment files, translog, and the Lucene‑based inverted index that powers its near‑real‑time capabilities.