# elastic/elasticsearch-definitive-guide

The Definitive Guide to Elasticsearch

Repository: https://github.com/elastic/elasticsearch-definitive-guide
Canonical: https://ross.abutalabs.com/products/elasticsearch-definitive-guide
Homepage: https://www.elastic.co/guide/en/elasticsearch/guide/current/index.html
Language: HTML
License: NOASSERTION
License Family: other
Archived: true
Last push: 2021-09-20T14:04:43+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4658, "days_push": 1808, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3570, forks 2795 (observed 2026-08-28T04:08:10.094067+00:00)

## What it is
The source repository for the legacy 'Elasticsearch: The Definitive Guide' book, written in Asciidoc and covering Elasticsearch 1.x and 2.x. It is no longer maintained and has been superseded by the current official Elasticsearch documentation.

## Use cases
- learn elasticsearch fundamentals from a book-style guide
- understand legacy elasticsearch 1.x and 2.x behavior
- find examples of distributed search and aggregation concepts
- study asciidoc documentation source for a technical book

## When to choose
- you are maintaining a legacy Elasticsearch 1.x or 2.x cluster
- you want conceptual explanations of core search and aggregation ideas that still apply

## When to avoid
- you are using modern Elasticsearch 7.x or later
- you need up-to-date, maintained documentation
- you need a redistributable or derivative work (CC BY-NC-ND license)

## Facets
- artifact type: learning-resource
- maturity: abandoned
- function: documentation, search-engine
- domain: databases, tutorials, documentation
- platform: -
- tags: elasticsearch, asciidoc, legacy-docs, book, search, web-server

## Member repositories
- elastic/elasticsearch-definitive-guide (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:10.094067+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:34:07.522313+00:00, confidence not recorded.
  - readme: https://github.com/elastic/elasticsearch-definitive-guide (fetched 2026-08-28T04:08:10.094067+00:00, sha 3e8903c2bef1)
- Data as of 2026-08-30T08:39:29.467469+00:00.