# innodb_ruby

A parser for InnoDB file formats, in Ruby

Repository: https://github.com/jeremycole/innodb_ruby
Canonical: https://ross.abutalabs.com/products/innodb_ruby
Homepage: http://rubygems.org/gems/innodb_ruby
Language: Ruby
License: NOASSERTION
License Family: other
Last push: 2026-04-28T13:04:05+00:00
Link (homepage): http://rubygems.org/gems/innodb_ruby
Link (site_page): https://guides.rubygems.org/command-reference
Link (site_page): https://rubygems.org/pages/about

## Health v2 (maintenance only)
Score: 68/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 79, release rhythm 35, longevity 100
- inputs: {"age_days": 5044, "days_push": 127, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1801, forks 326 (observed 2026-08-28T04:05:38.041948+00:00)

## What it is
A Ruby library and set of CLI tools that parse InnoDB (MySQL) on-disk file formats to expose internal storage structures. It is intended for learning, teaching, investigation, and debugging rather than production use.

## Use cases
- inspect innodb page fill and record counts
- visualize b+tree structure of a mysql table
- learn how innodb stores data on disk
- debug innodb storage engine changes
- parse mysql .ibd file format
- interactively explore innodb internals with irb

## When to choose
- you need to understand or debug InnoDB on-disk structures
- you're learning or teaching database storage internals
- you need details MySQL doesn't expose about page usage or B+tree layout

## When to avoid
- you need a production-safe or stable-API tool
- you need general MySQL administration or querying
- you're not comfortable with potentially buggy, unstable output

## Facets
- artifact type: library
- maturity: active
- function: parser, developer-tools, cli
- domain: databases, developer-tools
- platform: ruby, cli, cross-platform
- tags: mysql, innodb, file-format, storage-engine, btree, reverse-engineering, learning-tool, debugging

## Member repositories
- jeremycole/innodb_ruby (main) score 68
- jeremycole/innodb_diagrams (docs) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:38.041948+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 2026-08-30T03:22:03.493062+00:00, confidence not recorded.
  - readme: https://github.com/jeremycole/innodb_ruby (fetched 2026-08-28T04:05:38.041948+00:00, sha 27e01bd16370)
  - homepage: http://rubygems.org/gems/innodb_ruby (fetched 2026-08-29T11:01:19.207911+00:00, sha b092e031ffd4)
  - site_page: https://guides.rubygems.org/command-reference (fetched 2026-08-29T11:01:19.217210+00:00, sha ef62154d6253)
  - site_page: https://rubygems.org/pages/about (fetched 2026-08-29T11:01:19.221390+00:00, sha e4248571fa5d)
- Data as of 2026-08-30T08:39:29.467469+00:00.