Code Farming

Sep 15, 2024 · Backend Development

How Elasticsearch Indexes Documents: Step‑by‑Step Process

This article walks through Elasticsearch’s document indexing pipeline—from single‑document and bulk request routing, through the write‑refresh‑flush‑merge cycle, to the roles of Lucene, the translog, primary and replica shards, and how reliability, consistency, atomicity, isolation, real‑time visibility and performance are achieved.