Well, an RDBMS can be very fast but Solr using fq can be very fast as well. Just try fq=group:sports&fq=createdtime:<you time>
> Dear all, > > I have started to learn Solr for two months. At least right now, my system > runs good in a Solr cluster. > > I have a question when implementing one feature in my system. When > retrieving documents by keyword, I believe Solr is faster than relational > database. However, if doing the following operations, I guess the > performance must be lower. Is it right? > > What I am trying to do is listed as follows. > > 1) All of the documents in Solr have one field which is used to > differentiate them; different categories have different value in such a > field, e.g., Group; the documents are classified as "news", "sports", > "entertainment" and so on. > > 2) Retrieve all of them documents by the field, Group. > > 3) Besides the field of Group, another field called CreatedTime is also > existed. I will filter the documents retrieved by Group according to the > value of CreatedTime. The filtered documents are the final results I need. > > I guess the operation performance is lower than relational database, right? > Could you please give me an explanation to that? > > Best regards, > Li Bing
