Nrtsearch: Yelp’s Fast, Scalable and Cost Effective Search Engine

Search and ranking are part of many important features of Yelp - from looking for a plumber to showing relevant photos of the dish you search for. These varied use-cases led to the creation of Yelp’s Elasticsearch-based ranking platform, allowing real-time indexing, learning-to-rank, lesser maintenance overhead, and enabling access to search functionality to more teams at Yelp. We recently built Nrtsearch, a Lucene-based search engine, to replace Elasticsearch. Why Replace Elasticsearch? Our Ela...

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