Solr vs Lucene Comparison

When it comes to open-source search engines, Apache Lucene and Apache Solr are two popular choices. They both serve similar…

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Lucene MMapDirectory and ByteBuffersDirectory Examples

Apache Lucene is a powerful search library written in Java. It provides various directory implementations for storing index files, such…

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Open-source collaboration, or how we finally added merge-on-refresh to Apache Lucene

The open-source software movement is a clearly a powerful phenomenon. A diverse (in time, geography, interests, gender (hmm not really,…

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Indonesian Language in Lucene, Solr and Elasticsearch

Indonesian, or Bahasa Indonesia, is a very approachable language for westerners. It uses latin characters, there’s a clear structure, no…

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Lucene’s near-real-time segment index replication

[TL;DR: Apache Lucene 6.0 quietly introduced a powerful new feature called near-real-time (NRT) segment replication, for efficiently and reliably replicating…

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Lucene gets concurrent deletes and updates!

Long ago, Lucene could only use a single thread to write new segments to disk. The actual indexing of documents,…

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Learning Lucene

I am currently working with a team starting a new project based on Lucene. While most of the time I…

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