SolrCloud – write and read tolerance

SolrCloud similar to most of the distributed systems is designed with some rules in mind. There are also rules that each distributed system is subject to. For example the CAP theorem tells that a system can’t achieve availability, data consistency and network partition split tolerance at the same time – you can have two out of three at most. Of course, in this blog entry, we will not be discussing principles of the distributed systems, but we will focus on write and read tolerance in SolrCloud.

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Lucene and Solr 7.6.0

It is a pleasure to inform that the new version of Lucene library and Solr search server has been released. It is the next release from the 7.x branch and it is numbered 7.6.0. This release introduces fixes for the bugs found in the 7.5 version and new features. One of the features we like is the adding of the uninvertible option to fields and field type which allows us to control if the field can be uninverted.

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Solr Text Tagger – Quick Look into Solr 7.4

We haven’t looked into any Solr functionalities on Solr.pl for a while so it is time to look into one of the new features – the text tagger. It works on the basis of Solr index and is able to check documents sent to a new handler and return occurrences of names with offsets and other metadata that we added to Solr index. However keep in mind that Solr Text Tagger doesn’t do any kind of natural language processing, so no what we will give it, that is what we can expect to get back.

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