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📎 #elasticsearch

elasticsearch

What is ES​

  • Open-source search engine built on top of Apache Lucene
  • Features:
  • Real-time document store where every field is indexed / searchable
  • Distributed search engine with real-time engine
  • Scaling
    • Number of servers
    • Petabytes of structured / unstructured data

Terminology​

Relation DB => Databases => Tables => Rows => Columns
Elasticsearch => Indices => Types => Documents => Fields

References