elastic_search.htm

Elastic Search

Elastic search started off as a scalable Lucene; horizontally scalable search engine. It has been a competitor for Hadoop, Spark, and Flink

It's a server that handles JSON requests.

Elastic Stack

Kibana

• Web UI for searching and visualizing
• Complex aggregations, graphs, charts
• Often used for log analysis

ES is not only for searching text anymore.

Logstash / Beats

• Ways to feed data into Elastic Search
• FileBeat can monitor log files, parse them, and import into Elastic Search in near-real-time
• Not just log files

X-Pack

• Security
• Machine Learning
• Graph Exploration

Basic Concepts

Documents:

• Row in the database
• Something you're searching for
• Any structured JSON data works
• Every document has a unique ID and a type

E.g.,

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