# facebook/mysql-5.6

Facebook's branch of the Oracle MySQL database. This includes MyRocks.

Repository: https://github.com/facebook/mysql-5.6
Canonical: https://ross.abutalabs.com/products/mysql-56
Homepage: http://myrocks.io
Language: C++
License: NOASSERTION
License Family: other
Archived: true
Last push: 2025-02-27T17:24:15+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 8, release rhythm 35, longevity 100
- inputs: {"age_days": 4888, "days_push": 552, "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 2573, forks 712 (observed 2026-08-28T04:07:01.533190+00:00)

## What it is
Facebook's fork of Oracle MySQL 5.6 that includes the MyRocks storage engine, which uses RocksDB as the backend storage instead of InnoDB. It offers better compression, lower write amplification, and faster replication for flash-based storage workloads.

## Use cases
- run mysql with rocksdb storage engine
- reduce database storage footprint with better compression
- lower write amplification for flash storage endurance
- speed up mysql replication with read-free secondary key updates
- bulk load data faster without compaction overhead
- self-host a mysql-compatible database tuned for ssd workloads

## When to choose
- you need mysql compatibility but want RocksDB's space and write efficiency
- your workload is write-heavy on flash storage and InnoDB write amplification is a bottleneck
- you want faster replication with less random I/O for secondary indexes

## When to avoid
- you need a modern MySQL version with current features and security patches, since this is based on MySQL 5.6
- you rely on InnoDB-specific features or tooling
- you want a database with broad platform support beyond the officially verified Linux distributions

## Facets
- artifact type: application
- maturity: maintenance
- function: database, database-driver
- domain: databases, developer-tools
- platform: cpp, self-hosted
- tags: mysql, myrocks, rocksdb, storage-engine, fork, facebook, sql, linux

## Member repositories
- facebook/mysql-5.6 (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:01.533190+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 2026-08-30T02:22:52.396721+00:00, confidence not recorded.
  - readme: https://github.com/facebook/mysql-5.6 (fetched 2026-08-28T04:07:01.533190+00:00, sha dababa725e22)
  - homepage: http://myrocks.io (fetched 2026-08-29T10:05:27.218650+00:00, sha 528fe468b421)
  - site_page: http://myrocks.io/docs/getting-started (fetched 2026-08-29T10:05:27.221213+00:00, sha 0f3fc2004926)
- Data as of 2026-08-30T08:39:29.467469+00:00.