This Vagrant plugin allows you to configure a vm environment as a node in a client/server infraestructure. See also vagrant-nodemaster

Keep your code DRY by inferring column validations from table properties! Automagically validate presence, length, numericality, inclusion and uniqueness of ActiveRecord backed columns.

Token based authentication. To support backend authentication for ios, android, angular, ember etc...

Support for binary UUIDs in ActiveRecord

TO DO *is* a description

Mutex that can be used to synchronise ruby processes via an ActiveRecord datababase connection. (Only Mysql is supported at the moment.)

Something with the combination of Rails 3.1, Mysql2 0.3.x, Capybara, Selenium/Webkit/etc causes Mysql to raise exceptions where the connection is waiting on a result. This gem provides an auto-retry capability with the Mysql2Adapter to retry any query execution up to 5 times. This is a a temporary solution until the real issue with the above libraries/frameworks are resolved. This should NOT be used in production.

An ActiveRecord extension for enabling SQL_CACHE and SQL_NO_CACHE in MySQL queries

Adds a :uuid column to ActiveRecord MySQL2 Adapter. Store UUIDs as 16 bytes binary column.

Sharding library for ActiveRecord(MySQL)

Allows the use of TiDB as a backend for ActiveRecord and Rails apps.

active_record_uuid is a nice gem that add uuid supports to your activerecord models (MySQL). It allows you to store uuid in various formats: binary (16 bytes), base64 (24 bytes), hexdigest (32 bytes), or string (36 bytes), and query back with uuid string.

Rails engine to implement a Ruby backend store implementation for Annotator, an open-source JavaScript library to easily add annotation functionality to any webpage.

Provide usage statistics about how your application is being used

This is a functional replacement for acts_as_archive in rails 3 applications, the only functionality that is not duplicated is the migration from acts_as_paranoid

Add index hint to MySQL query in Arel.

ar_mysql_flexmaster allows configuring N mysql servers in database.yml and auto-selects which is a master at runtime

Use ActiveRecord and Pry as your favorite SQL query editor.

Access mysql without blocking.

An ActiveRecord extension for writing commonly useful atomic SQL statements to avoid race condition.