How to install Elasticsearch on Ubuntu 20.04 | VPS Tutorial

Elasticsearch is an open-source, RESTful, distributed search and analytics engine, built on top of Apache Lucene. Since its release in 2010, Elasticsearch has rapidly become the most popular and widely used search engine for use cases related to logging analysis, full-text search, security information, and more. confidentiality, business analysis, and operational information.

We should use Elasticsearch in the following cases:
- Searching for pure text (textual search): regular text search.
- Searching text and structured data (product search by name + properties): search for text and structured data.
- Data aggregation, security analytics, analysis of business data: data aggregation, security analysis, business data analysis, large data storage.
- Logging and log analytics: record the activity and analyze it.
- Application performance monitoring: monitor application performance.
- Infrastructure indicators and container monitoring.
- Geo Search: search by coordinates, analyze and visualize geospatial data.
- JSON document storage: stores data in JSON format.

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