Lucene.NET

Lucene.NET is a high-performance, open-source text search engine library written in C# and designed for the .NET runtime. It is a line-by-line port of the Java-based Apache Lucene 4.8, offering powerful indexing and search capabilities for .NET applications. Lucene.NET enables full-text search across large datasets with sub-second response times and is used in production by many developers. It supports .NET Standard 2.0/2.1 and .NET Framework 4.6.2+, and runs on Windows, macOS, Unix, and even IoT platforms.

Features

• Full-text search with high performance and low latency
• Line-by-line port of Apache Lucene 4.8 to C#
• Over 7800 unit tests ensuring stability and reliability
• Support for multiple field types: text, string, integer
• Flexible indexing with schema-less document structure
• Segment-based storage using Log Structured Merge architecture
• Support for various storage backends: file system, RAM
• Multi-platform compatibility: Windows, Unix, macOS, mobile, IoT

Capabilities

• Indexing and searching large volumes of structured and unstructured data
• Real-time updates and querying through IndexWriter and IndexSearcher
• Custom analyzers and tokenizers for advanced text processing
• Phrase and multi-term queries for precise search results
• Integration into desktop, web, mobile, and embedded applications
• Highly idiomatic API tailored for .NET developers

Benefits

• Empowers .NET developers with robust search capabilities
• Open-source and community-driven with Apache 2.0 licensing
• Stable and production-ready with extensive test coverage
• Easy to extend and customize due to pure C# implementation
• Compatible with modern .NET platforms and development workflows
• Efficient data handling with optimized indexing and retrieval