Vespa is a big data serving engine with built-in vector search (ANN/HNSW), real-time ML serving, hybrid ranking (vector+lexical). Suited for search engines/apps like recommendations; vs Elasticsearch more ML-focused. Features: tensor compute, autoscaling.
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Vespa
Vespa is an open-source big data serving engine designed for real-time computation over large datasets featuring vector search and ML inference.
| Tool | Vespa Difference |
|---|---|
| Elasticsearch | Native vector/tensor support |
| Milvus | Full serving platform with integrated ranking/ML |
Free and open-source (Apache 2.0 license).
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