Vespa Terminology for Elasticsearch, OpenSearch or Solr People

Radu Gheorghe provides a comprehensive overview of Vespa, drawing parallels with Elasticsearch, OpenSearch, and Solr for those familiar with Lucene search engines. He explains the key concepts and terminologies in Vespa, such as applications, application packages, content nodes, and clusters, highlighting similarities and differences with equivalent features in other search platforms. Vespa's architecture is characterized by its microservices approach, with distinct processes for content, container, and admin nodes, contrasting with the more monolithic structure in Elasticsearch and OpenSearch. The document further delves into Vespa-specific functionalities like attributes, federation, and streaming search, emphasizing Vespa's unique strengths in real-time updates and multi-tenancy scenarios. Gheorghe also discusses Vespa's ranking and search capabilities, noting its flexibility in combining semantic and lexical search, and outlines the advantages of Vespa's elasticity in handling dynamic data distribution without predefined sharding.