Rails engine that provides fulltext-search capability using mroonga(formerly. groonga storage engine). Requires Rails ~> 3.0

DBSync

Run ActiveRecord migrations through gh-ost

GUIDs for sharded models

A Ruby library of smart contracts that can be used on Tapyrus.

Gratan is a tool to manage MySQL permissions using Ruby DSL.

vCard like contact and address models and helpers for Rails.

Alternative MySQL backend for hiera

Append-only histories + chained snapshots of your ActiveRecord tables

Github Statistics

Provides idempotency keys for Rack applications.

Read/Write proxy for ActiveRecord using primary/replica databases

It's a web-spider moudule for Javlibrary(Japan AV Library) website.

Jinrai is a awesome Cursor based pagination Link.

Add native support for MySQL [5.7] JSON data type to Rails 4.

Process KISSmetrics data dumps

This gem provides MySQL's LOAD DATA INFILE for Mysql2 and ActiveRecord

"Bitfields for ActiveRecord": store low-cardinality columns in a separate table for vastly more flexibility and better performance.

A simple ActiveRecord wrapper for various Magento models

This gem aims to provide an easy and faster way to do single database insertions in Rails.