Nowdays, I've got a urgent task to improve the "OR" query performance with solr. I have deployed 9 shards with solr-cloud in two server(each server : 16 cores, 32G RAM). The total document count: 60,000,000, total index size : 9G. According to the requirement, I have to use the "OR" query to get results. The average number of query terms is about 15. The response time for "OR" query is around 1-2seconds(the "AND" query is just about 30ms-40ms ). Our target : promote 50%, that is, at most 500ms-1s per query. The document will soar to 80,000,000, however, the performance should keep in 500ms-1s query. Any advise or approach is appreciated. Thanks in advance.
Jack
