Elasticsearch
This folder has no README. Everything inside it is listed below.
Notes
- Elasticsearch 6 Elasticsearch is a distributed search and analytics engine built on Lucene.
- Elasticsearch — Inverted Index Fundamentals 6 What makes Elasticsearch (and Lucene underneath) fast at text search.
- Elasticsearch — Query DSL and BM25 Scoring 7 The Query DSL is JSON. Verbose, expressive, sometimes surprising.
- Elasticsearch — Mappings, Field Types, and Schema Evolution 7 The mapping is Elasticsearch's schema. Most production bugs come from mapping mistakes — dynamic mappings exploding, the wrong type chosen, or trying to…
- Elasticsearch — Aggregations 7 Aggregations are how Elasticsearch becomes "SQL with a search engine attached." Group, bucket, compute metrics, nest them — all on top of the inverted index.
- Elasticsearch — Vector Search and kNN 7 Since 8.x, Elasticsearch supports dense vector search via HNSW.
- Elasticsearch — Python Client and Production Pitfalls 7 elasticsearch-py (or opensearch-py for the Amazon fork).
- OpenSearch and the fork 5 Ads name both, often in the same line, and the question behind it is whether you know they are the same codebase five years apart — and which half of the…