It is a pleasure to inform that the new version of the Lucene library and Solr search server has been released. It is the next release from the 8.x branch and it is numbered 8.3.0. This release introduces fixes for the bugs found in the previous versions along with new features.
Read moreCategory Routed Aliases
Through the lifetime of Solr we were given the possibility to work with cores, then collections and finally aliases – the alternative names for collections. Aliases allow the user to give your collection a new, virtual name and group multiple collections under that single virtual name. This allows isolation of the real collection name from the name that the client application is using. That allows changing the collection in the background without the need of bringing down the whole cluster and make your application or product unavailable. In Solr we have the option to use two aliases groups:
Read moreRead-Only Collections
Have you ever wonder how to avoid accidental or on purpose modification of the collection data? Of course, we could reject the access and it is one of the possible solutions, but it is not always possible. In today’s blog post we will look into how to easily protect your collection from accidental modifications by setting it to be read-only.
Read moreLucene and Solr 8.2.0
It is a pleasure to inform that the new version of the Lucene library and Solr search server has been released. It is the next release from the 8.x branch and it is numbered 8.2.0. This release introduces fixes for the bugs found in the 8.1.0 and 8.1.1 versions and new features.
Read moreLucene and Solr 7.7.2
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 7.7.2. This release introduces fixes for the bugs found in the 7.7.2 version.
Read moreLucene and Solr 8.1.1
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 8.x branch and it is numbered 8.1.1. This release introduces fixes for the bugs found in the 8.1 version.
Read moreDistributed IDF
When Lucene and Solr searches through the data, each document is assigned a score that is calculated on the basis of query terms statistics. When using SolrCloud and our data inside the collection is distributed among multiple shards we are hit by a problem of not exact inverse document frequency calculation. The problem can be defined in the following way – each shard stores the term statistics locally and doesn’t share that with other shards during query execution. Can we do something about it to have more precise IDF calculation? Let’s see what we can do about it.
Read moreLucene and Solr 8.1.0
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 8.x branch and it is numbered 8.1.0. This release introduces fixes for the bugs found in the 8.0 version and new features.
Read moreSolr 8 – ByteBuffersDirectory – quick look
One of the new features introduced in the recently released Solr 8.0 is new implementation of the Directory interface – one that will replace not scalable RAMDirectory. The new implementation called ByteBuffersDirectory is dedicated to small, short lived data that is held only in memory. Let’s have a quick look into potential use cases, advantages and drawbacks of this new implementation.
Read moreMigration to Solr 8
With the recent release of Solr 8.0 you may be wondering if it is worth migrating to the new version and how to do it. Is it possible to upgrade your cluster without major downtime? Is it possible to upgrade to new version using rolling restarts? We will try to answer that question in this blog post.
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