VESPA-SEARCH

Yahoo Apache big data search.

Definition

Vespa combines search engine + ML inference + ranking in one. Massively distributed architecture for trillions of documents and billions of queries per day. YQL (Yahoo Query Language) schemas. Ranking: tensor expressions, ONNX models. Availability: Vespa Cloud (SaaS), self-hosted. Adopted by Yahoo! Mail, Spotify, Airbnb, Verizon Media. Vespa.ai spin-off in 2023 by Yahoo.

Origin

Vespa initiated 2003 at Yahoo! (formerly Alta Vista heritage) ; open-source Apache 2.0 September 2017 ; Vespa.ai spin-off 2023.

Example in context

Spotify uses Vespa for real-time recommendations: ranking 100K+ songs in under 10ms based on listener context.

Related terms

• Elasticsearch — enterprise competitor.