1.For my case, I am using solr for getting search collection whether it's available or not.
2.We have different collection where we can store the particular data. But this data should be available in search collection. For this we are using Apache solr to check whether the given search collection returns a valid response or not. So if the search collection and return a data response, it will be available in front end.
3.Also solr helps to search the particular collection details innthe response
4.We can write query to get the particular data's details Review collected by and hosted on G2.com.
Sometimes solr url won't be loaded. It might be for the maintenance Review collected by and hosted on G2.com.