A quick information for those of you who are interested in my latest Solr book, the Solr Cookbook Third Edition. Packt Publishing is offering the book for less than 6 euros, starting on 17th December till the end of the year. If you are interested, you can buy the book with the discounted price at Solr Cookbook Third Edition Sale website.
As usual when we are not updating solr.pl for a long time that doesn’t mean that we are not doing anything. Similar to the previous period of silence we were writing. This time, after two years of from Apache Solr 4 Cookbook publication we are proud to announce that this Monday – 26.01.2015 Solr Cookbook Third Edition will be published.
Together with Packt Publishing we have give away copies of our latest book – “Elasticsearch Server 2nd Edition“. Although it is not about Solr, you can have a chance to learn about it and compare to Solr. For the readers of solr.pl we will modify the competition question – “What unusual use case you’ve implemented using Apache Solr”. You can also give an example of a functionality that can’t be achieved with Elasticsearch.
One of the questions I tend to get is what happens with SolrCloud cluster when ZooKeeper fails. Of course we are not talking about a single ZooKeeper instance failure, but the whole ensemble not being accessible and so the quorum not present. Because the answer to this question is very easy to verify i decided to make a simple blog post to show what happens when ZooKeeper fails.
And now two birds with a single stone – a new article and the Apache Solr 4 Cookbook giveaway results. In this article we would like to show you how to implement random ordering of documents in the resulting using Apache Solr. Our example is real case scenario – we’ve used this to draw two giveaway participants. Those two comment authors that will be of top of the results set will receive the ebook.
In the blog post dedicated to Solr 4.0 Cookbook we give a small hint that cookbook was not the only project that occupies our free time. Today we can officially say that a few month of hard work is slowly coming to an end – we can announce a new book about one of the greatest piece of open-source software – ElasticSearch Server book!
When indexing so called “rich documents” we should sometimes think about, where we want those documents to be processes – should we send them to Apache Solr (or other search engine, like ElasticSearch) and forget about them or whether we should use Apache Tika before sending the document and send the extracted content along with other information for indexation.