Document recent Solr performance tuning practices. An analogy is to query a database.
1. Optimization of business code
Reduce unnecessary Solr requests.
2. Qualify FL fields
Specify only the field returns required by the business. In practice, the number of fields returned was reduced from 50 to 1, reducing the overall time by 60%. The effect is affected by hardware performance.
3. Use docValues for facet fields
4. Index optimization
Reduce unnecessary use of CopyField and optimize your indexes regularly.
5. Be careful with fuzzy search
It can be analogous to the LIKE statement in SQL, which has a certain impact on performance.