Atlas Search¶
Note
Atlas Search is available on all cluster tiers running MongoDB version 4.2 or later.
MongoDB's Atlas Search feature offers fine-grained text indexing to enable advanced search functionality without any additional management required. Atlas Search provides options for several kinds of text analyzers, score-based results ranking, and a rich query language.
Important
Atlas Search is deployed on your Atlas cluster. When a new version of Atlas Search is deployed, your Atlas cluster might experience brief network failures in returning query results. To mitigate issues during deployment and minimize impact to your application, consider the following:
- Implement retry logic in your application.
- Configure Atlas maintenance windows.
Getting Started¶
To get started creating and querying an Atlas Search index, see the Atlas Search Tutorial.
Find out more about:
- Analyzers
- Analyzers control the way your Atlas Search index is constructed. You can select an analyzer to customize your index to make the best use of a particular language's vocabulary and grammar, or to create an index which is language-neutral.
- Index Definition Format
- You can customize your index definition to take advantage of static and dynamic field mappings.
- Index Management
- Learn how to create, edit, and delete Atlas Search indexes.
- The $search Aggregation Pipeline Stage
- Construct Atlas Search queries with the
$searchaggregation pipeline stage. Find reference pages for the$searchoperators with examples here. - Performance Considerations
- Information about how Atlas Search affects database performance and how to monitor resource usage.
- Scoring
- Information about how Atlas Search ranks query results.
- Highlighting
- Information about how to return highlighted search results.
- Explain
- Information on the query plan and execution statistics of a
$searchquery. - Atlas Search Free and Shared Tier Limitations
- Information about the Atlas Search limitations on
M0,M2, andM5shared tier clusters.
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