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Lucidworks Fusion Data Discovery Platform

Lucidworks is an enterprise search technology company that offers an application development platform, commercial support, and value-add software for open-source Apache Lucene and Apache Solr. The company built Lucidworks Fusion in a modern, containerized, cloud-native architecture that simplifies the process of deploying AI-powered data discovery and search applications. To ensure users find relevant data fast, Lucidworks implemented semantic search using the vector similarity approach.

Milvus, an open-source vector database built by Zilliz, is used to power the core semantic search module inside Lucidworks Fusion.


Build a data discovery platform that delivers relevant semantic search results at speed.


  • Return semantic search results on large-scale datasets as quickly as possible.
  • Retrieve roughly 20 relevant matches per query from a dataset that contains millions of vectors.
  • Maintain efficiency amid thousands of simultaneous semantic search requests.

Why Verctor Database

  • Milvus can store hundreds of billions of vectors across multiple collections to ensure that search is fast and results are relevant.
  • Support for a wide range of indexes makes semantic search blazing fast without sacrificing recall.
  • When more speed is needed, Milvus can run even faster on GPU.
  • Optimization for batch requests means Milvus can maintain efficiency even under a heavy load of requests per second (RPS).


  • 1,500 RPS against a collection of over one million documents, with an average response time of around 40 milliseconds.

"Milvus can handle vectors at any scale efficiently and at lightning speed. Without a vector search engine like Milvus, similarity searches would not be feasible across the entire vector space."

- Elizabeth Edmiston, Senior Software Engineer at Lucidworks

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