About Florian Hopf

Florian is working as a freelance software developer and consultant in Karlsruhe, Germany. The main focus of his work is information retrieval with Lucene, Solr and Elasticsearch. He is one of the organizers of the Java User Group in Karlsruhe.

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Use Cases for Elasticsearch: Geospatial Search

In the previous posts we have seen that Elasticsearch can be used to store documents in JSON format and distribute the data across multiple nodes as shards and replicas. Lucene, the ...
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Use Cases for Elasticsearch: Flexible Query Cache

In the previous two posts on use cases for Elasticsearch we have seen that Elasticsearch can be used to store even large amounts of documents and that we can access those using the ...
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Use Cases for Elasticsearch: Full Text Search

In the last post of this series on use cases for Elasticsearch we looked at the features Elasticsearch provides for storing even large amounts of documents. In this post we will look ...
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Use Cases for Elasticsearch: Document Store

I’ll be giving an introductory talk about Elasticsearch twice in July, first at Developer Week Nürnberg, then at Java Forum Stuttgart. I am showing some of the features of Elasticsearch ...
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Goodbye Sense – Welcome Alternatives?

I only recently noticed that Sense, the Chrome Plugin for Elasticsearch has been pulled from the app store by its creator. There are quite strong opinions in this thread and I would ...
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An Alternative to the Twitter River – Index Tweets in Elasticsearch with Logstash

For some time now I’ve been using the Elasticsearch Twitter river for streaming conference tweets to Elasticsearch. The river runs on an Elasticsearch node, tracks the Twitter ...
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A Tour Through elasticsearch-kopf

When I needed a plugin to display the cluster state of Elasticsearch or needed some insight into the indices I normally reached for the classic plugin elasticsearch-head. As it is recommended ...
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The Absolute Basics of Indexing Data

Ever wondered how a search engine works? In this post I would like to show you a high level view of the internal workings of a search engine and how it can be used to give fast access ...
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What Is Special About This? Significant Terms in Elasticseach

I have been using Elasticsearch a few times now for doing analytics of twitter data for conferences. Popular hashtags and mentions that can be extraced using facets can show what is ...
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Prefix and Suffix Matches in Solr

Search engines are all about looking up strings. The user enters a query term that is then retrieved from the inverted index. Sometimes a user is looking for a value that is only a ...
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