Elasticsearch on Kevin wang's bloghttps://kevinwang930.github.io/tags/elasticsearch/Recent content in Elasticsearch on Kevin wang's blogHugoen-USSat, 01 Aug 2026 21:10:00 +0200Elasticsearch cluster network and indexeshttps://kevinwang930.github.io/post/data/search/elasticsearch-cluster-index/Sat, 01 Aug 2026 21:10:00 +0200https://kevinwang930.github.io/post/data/search/elasticsearch-cluster-index/<p>Elasticsearch is a distributed search engine: clients speak HTTP, nodes form a TCP mesh, a master publishes <code>ClusterState</code>, and each data node stores Lucene-backed shard copies. This post covers <strong>cluster management</strong> (topology and TCP transport) and <strong>how an index is modeled and opened</strong>, from the tree under <code>git/elasticsearch</code> (server <code>Version.CURRENT</code> = 9.6.0 on <code>main</code>).</p>