After Solr startup and creating collections, I’m waiting for collection to become active by sending request to http://localhost:8984/api/collections/, checking state and health. However even if health and status are correct, first requests to solr//update/json returns 404. It can be “solved” by adding some waiting time after collections are up, but I’m looking for a way to do it without unnecessary wait.

while upgrading solr from 8.11.3-slim to 9-slim I am getting error “Task: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Error loading class ‘solr.scripting.xslt.XSLTResponseWriter’“

I am new to solr world, I am currently using solr8.11.2 (Local Machine).
I want to know the exact response time of the query to fetch data (Basically the overall time it takes to get the data) from the docs in my core. I do know about Qtime(ms) but is there an alternate way to know it?

I have a solr schema with fields “title”, “source”, and “location” set as strings. How can I make sure that there are not two document with the exact same “title”, “source”, and “location”.