In Solr 3.1 and later we have a very interesting functionality, which enables us to sort by function value. What that gives us ? Actually a few interesting possibilities.
Month: February 2011
Waiting for 4.0: SOLR-2272 – Solr and JOIN functionality
Index – delete or update?
From time to time, in working with Solr there is a problem – how to update Solr index structure. There are various reasons for these changes – the new functional requirements, optimization, or anything else – it is not important. What is important is the question that arise – should we remove the index, or simply change the structure and do a full indexing? Contrary to appearances, the answer to this question depends on the changes we made in the structure of the index.
”Car sale” application – WordDelimiterFilter and PatternReplaceFilter, helping to improve search results (part 2)
In the first part of our ”Car sale” application related posts we created some standard index structure by properly configuring schema.xml configuration file. It didn’t take long to hear the first complains from the website users with this kind of configuration. Why don’t I receive any search results entering the “audi a” phrase ? I would like to see some announcements with “Audi A6” and “Audi A8” for example. I entered the phrase “Honda crv” – 0 results, “Suzuki maruti” – none. Are there no related offers in the announcement database ? There are! But the current configuration of the searchable field type (field “content” – type “text”) does not allow us to find those offers using the queries we’ve entered. That’s the reason why the WordDelimiterFilter and PatternReplaceFilter need to enter the battlefield.
Optimization – filter cache
Today’s entry is dedicated to one type of cache in the Solr – filter cache. I will try to explain what it does, how to configure it and how to use it in an efficient way.