Only a few weeks passed since the release of 3.2 version Lucene and Solr (change list) and today we have another release numbered 3.3. In the newest version there are a few functionalities worth looking at, especially when we talk about Solr.
solr
When to commit?
The question I asked myself recently what seems to be one of those for which the response should be quick and painless. So, when to send the commit command to Solr (or Lucene)? Despite the simplicity of the questions, the answer is not clear, at least in my opinion.
Lucene and Solr 3.2
On 03 June 2011 Lucene and Solr commiters published a new, stable version of Lucene library and Solr search engine – both numbered 3.2. You should not expect revolution in terms of new functionalities, but there are few changes worth the look.
Quick look: frange
In Solr 1.4 there were a new type of queries presented the frange queries. This new type of queries let you search for a range of values. According to the Solr developers this queries should be much faster from normal range queries. I thought that I should make a simple test to see how much faster, the new range queries can be expected to be.
Solr filters: PatternReplaceCharFilter
Continuing the overview of the filters included in Solr today we look at the PatternReplaceCharFilter.
As you might guess the task of the filter is to change the matching input stream parts that match the given regular expression.
Solr filters: KeepWordFilter
This time I decided to look at one of the unusual filters available in the standard distribution of Solr. The first one in my hands is a filter called KeepWordFilter.
Solr 3.1 Cookbook
With the approaching release date we would like to present a new position for Solr, which will soon (planned release date June 2011) be released on the market – “Solr 3.1 Cookbook“. Of course we are proud to say, that the book is written by one of us 😉
Solr 3.1: JSON Update Handler
After the release of Solr 3.1 I decided to look into the extended list of formats through which we can update the indexes. Until now we had a choice of three kinds of formats with which we were able to provide data – XML, CSV, and so. called JavaBin. The release of Solr 3.1 introduces the fourth format – JSON.
Lucene and Solr 3.1
A few minutes ago Lucene and Solr commiters published a new, stable version of Lucene library and Solr search engine – both numbered 3.1. There are numerous changes, but I’ll just mention some of them (following Grant Ingersoll announcement).
Solr 1.4: Local Params
Several months ago, during one of the projects I have tried to construct a query with optimal faceting. The problem was that we need filters (fq) in the query but in the same time we need a faceting that was not filtered. To some point it was not possible in Solr – you had to make two queries. But now, you can do it with one query. Let’s meet LocalParams.