Sarthak Nandi, Software Engineer and Umesh Dangat, Group Tech Lead
- Sep 21, 2021
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 Elasticsearch-based ranking platform had been working well with a wide variety of applications deployed on it. But as we onboarded more use-cases, Elasticsearch costs didn’t scale as well...