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Elasticsearch
Core details
Title
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Description
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Elasticsearch is a distributed search and analytics engine built on Lucene, excelling at full-text search, aggregations, and real-time indexing for logs/apps. Part of ELK stack.
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Usage & Trade-offs
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When to use it
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Use Elasticsearch when: - Implementing site search. - Log analysis. - Recommendations. - Big data queries.
Pros
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- Lightning full-text. - JSON docs easy. - Geo/spatial support. - Scalable clusters. - REST API.
Cons
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- Resource hungry. - Complex tuning. - No transactions. - Security config. - Learning DSL.
Notes
Note: Use bool queries. Index templates. Monitor health.
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