solr

Solr is widely adopted by startups and enterprises alike. It's powerful and open-source, so it's very appealing to just about everyone looking for a search platform to build off of.

In this tutorial, you'll see how to deploy Solr on Kubernetes. You'll also see how to use the Solr Operator to autoscale a SolrCloud cluster based on CPU with the

Introduction In the ever-evolving world of search engines, Elasticsearch, OpenSearch, and Solr have long held the spotlight. However, there are several smaller search platforms that pack a punch and offer

If you’re looking for a short answer on OpenSearch vs Solr, here’s a flow chart: We normally recommend the one you (or your team) already know or the prefer because,

With Solr 9 the Autoscaling Framework was removed - for being too complex and not terribly reliable - and instead we have Replica Placement Plugins. Unlike Autoscaling, replica placement only

OK, so you want to sort your documents by something that can’t be implemented with Solr’s built-in functions. This calls for a custom function, which you can implement through your

If you’re using Solr, for sure there are times when you change the schema and need to reindex. Quite often the source of truth is a database, so you can

“Solr or Elasticsearch?”…well, at least that is the common question we hear from Sematext’s consulting services clients and prospects. Which one is better, Solr or Elasticsearch? Which one is faster?

Let's say you get an alert that one or more queries is slow. Or that your users complain, whichever comes first 🙂  We've all been there… How do you find

Apache Solr was always ready to be extended. What was only needed is a binary with the code and the modification of the Solr configuration file, the solrconfig.xml and we

If you’re running Solr and have to troubleshoot it (or maybe you just want a good overview!), then you’d probably want to collect logs, configs, maybe a snapshot of metrics

As shown in Part 1, key Solr metrics to monitor, the setup, tuning, and operations of Solr require deep insights into the performance metrics such as request rate and latency,

As the first part of the three-part series on monitoring Apache Solr, this article explores which Solr metrics are important to monitor and why. The second part of the series

Over the years, natural language processing, in the world of search, went from interesting detail to a must have, especially in areas such as e-commerce. Engineers started incorporating classification, synonym

What is Search Relevance Similarity Lucene has a lot of options for configuring similarity. By extension, Solr and Elasticsearch have the same options. Similarity makes the base of your relevancy

During the Entity Extraction For Product Searches talk that Radu Gheorghe and I gave at Activate conference in Montreal last year, we talked about various natural language processing and machine learning algorithms. We

During our Activate presentation, we talked about how to do query expansion by dynamically generating synonyms. Instead of statically defining synonyms lists, we showed a demo of how you could

Since we’ve been working with Solr on a daily basis for over a decade now and know so much about it, we like helping others improve their knowledge of these

One of the things that were extensively changed in Solr 6.0 is the Streaming Expressions and what we can do with them (hint: amazing stuff!). We already described Solr SQL

With the recent release of Apache Lucene and Solr 6, we should familiarize ourselves with the juicy features that come with them. We have the new default Similarity implementation -

With the release of Solr 7 the community around it produced yet another great version of this search engine. As usual, there is an extensive list of changes, bug fixes

Another Lucene/Solr Revolution happened on September 12-15, 2017 in Las Vegas. Sematext was there, exhibiting AND giving two talks! Thanks to everyone who stopped by our booth and attended our two talks: Optimize Is (Not) Bad

Another Lucene/Solr Revolution happened on September 12-15, 2017 in Las Vegas. Sematext was there, exhibiting AND giving two talks! Thanks to everyone who stopped by our booth and attended our two talks: Optimize Is (Not) Bad

Last updated on Jan 11, 2018 We are all used to the Solr API that has been present in Solr from its beginnings. We send the data using HTTP protocol,

Sematext Solr AutoComplete is an open-source Solr add-on that provides suggest-as-you-type functionality. In this post we'll explain how you can install it, load the autocomplete collection/core with suggestions and how

As you know, in Sematext we looooove logs and metrics and we enjoy playing with them on a daily basis. We have our Logsene, which is all about logs and

Docker is all the rage these days, but one doesn't hear about running Solr on Docker very much. Last month, we gave a talk on the topic of running containerized

Not everyone uses Splunk or ELK stack for logs. A few weeks ago, at the Lucene/Solr Revolution conference in Boston, we gave a talk about using Solr for logging, along

Last updated on Jan 10, 2018 One of the things you learn when attending Sematext Solr training is how to scale Solr. We discuss various topics regarding leader shards and

Last updated on Jan 8, 2018 Last time, when talking about Solr 6 we learned how to use streaming expressions to automatically update data in a collection. You can imagine

In this presentation from Lucene/Solr Revolution 2015, Sematext engineers -- and Solr and centralized logging experts -- Radu Gheorghe and Rafal Kuć talk about searching and analyzing time-based data at

Last updated on Jan 10, 2018 Many Solr users need to handle multi-tenant data. There are different techniques that deal with this situation: some good, some not-so-good. Using routing to handle such