elasticsearch/docs/reference/elasticsearch/index.md

Elasticsearch

{{es}} is a distributed search and analytics engine, scalable data store, and vector database built on Apache Lucene. It’s optimized for speed and relevance on production-scale workloads. Use Elasticsearch to search, index, store, and analyze data of all shapes and sizes in near real time.

Quick links

:::{dropdown} Useful links

• REST API Reference
• API Conventions
• Settings Reference
• Breaking Changes
• Compatibility
• Glossary
• Plugin Development
• Supported Platforms :::

Setup and architecture

• Set up Elasticsearch
• Secure the Elastic Stack
• Upgrade Elasticsearch
• Set up a cluster for high availability
• Stack monitoring
• Troubleshooting
• Optimizations

Working with data

• Adding data to Elasticsearch
• Connectors
• Web crawler
• Data streams
• Ingest pipelines
• Mapping
• Data management
• Downsampling
• Snapshot and restore

Search and analytics

{{es}} is the search and analytics engine that powers the {{stack}}.

• Get started
• Learn how to search your data
• Query data programmatically: use query languages to run advanced search, filtering, or analytics
  • Query DSL: full JSON-based query language
  • ES|QL: fast, SQL-like language with piped syntax
  • EQL: for event-based time series data, such as logs, metrics, and traces
  • SQL: SQL-style queries on Elasticsearch data
• Search applications
• Aggregations
• Geospatial analysis
• Machine Learning
• Alerting

APIs and developer docs

• REST APIs
• {{es}} Clients
• Painless
• Plugins and integrations
• Search Labs
• Notebook examples