Elasticsearch and Lucene
Elasticsearch is a distributed search and analytics engine, built on top of Lucene. It provides a JSON-based REST API and supports sharding, replication, and cluster management, for high availability.
Lucene is a high-performance search engine library, written in Java. It provides fast and memory efficient text indexing (20-30% of the original text size), and powerful search algorithms:
- Ranked and faceted searching
- Text highlighting
- Autocomplete
- Suggesters ("Did you mean?")
- Spell checkers
- Aggregations
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Learn more about computerscience with this collection
Understanding machine learning models
Improving data analysis and decision-making
How Google uses logic in machine learning
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Performance
- Fast full-text search - Because it's built on top of Lucene
- Near real-time indexing - It takes under 1s for newly indexed documents to show up in searches
- High performance & Fault tolerance - Each index is split into shards, ...
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