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# Search Service
This service handles search traffic and is the service
you're most directly interacting with when visiting
[search.marginalia.nu ](https://search.marginalia.nu ).
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It interprets a "human" query and translates it into a
request that gets passed into to the index service, which finds
related documents, which this service then ranks and returns
to the user.
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![image ](../../../doc/diagram/search-service-map.svg )
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## Central classes
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* [SearchService ](src/main/java/nu/marginalia/search/SearchService.java ) receives requests and delegates to the
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appropriate services.
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* [CommandEvaluator ](src/main/java/nu/marginalia/search/command/CommandEvaluator.java ) interprets a user query and acts
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upon it, dealing with special operations like `browse:` or `site:` .
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* [QueryFactory ](src/main/java/nu/marginalia/search/query/QueryFactory.java ) parses a search query into a machine readable query specification.
* [SearchQueryIndexService ](src/main/java/nu/marginalia/search/svc/SearchQueryIndexService.java ) passes a parsed search query to the index service, and
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then decorates the search results so that they can be rendered.
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## See Also
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* [features-search ](../../features-search/ )