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Mediumcaching-performance

How to Learn Elasticsearch

30 minsElasticsearchSearch
30 mins
1 sections
Elasticsearch, Search

Overview

Based on the Lucene library, Elasticsearch provides search capabilities. It provides a distributed, multitenant-capable full-text search engine with an HTTP web interface and schema-free JSON documents. The diagram above shows the outline.

Features of ElasticSearch:

  • Real-time full-text search
  • Analytics engine
  • Distributed Lucene

ElasticSearch use cases:

  • Product search on an eCommerce website
  • Log analysis
  • Auto completer, spell checker
  • Business intelligence analysis
  • Full-text search on Wikipedia
  • Full-text search on StackOverflow

The core of ElasticSearch lies in the data structure and indexing. It is important to understand how ES builds the term dictionary using LSM Tree (Log-Strucutured Merge Tree).

How to Learn Elasticsearch [Medium] | Infosys System_design | TomoLink