Prometheus metric collector and exporter for Ruby

Alchemy is a powerful, userfriendly and flexible Rails CMS.

Automatically eager loads Rails associations as associations are traversed

ranked-model is a modern row sorting library built for Rails 4.2+. It uses ARel aggressively and is better optimized than most other libraries.

Overrides some basic methods for the current model so that calling #destroy sets a 'deleted_at' field to the current timestamp. ActiveRecord is required.

Identify database issues before they hit production.

Provides simple way to integrate regression test selection approach to your RSpec test suite

Adds helpers to migrations and dumps foreign keys to schema.rb

Advisory locking for ActiveRecord

ActiveRecord instrumentation for the OpenTelemetry framework

Monitors Ruby apps and reports detailed metrics on performance to Scout.

Extension to ActiveRecord::Base for validating hostnames

Oracle "enhanced" ActiveRecord adapter contains useful additional methods for working with new and legacy Oracle databases. This adapter is superset of original ActiveRecord Oracle adapter.

lol_dba is a small package of rake tasks that scan your application models and displays a list of columns that probably should be indexed. Also, it can generate .sql migration scripts.

This Gem adds useful methods to your Rails app to validate, display and save phone numbers.

Extends ActiveRecord#explain with support for EXPLAIN ANALYZE and output formats of JSON, XML, and YAML.

PostgreSQL JSONB-based model changes tracking

Ridgepole is a tool to manage DB schema. It defines DB schema using Rails DSL, and updates DB schema according to DSL.

Persistent event repository implementation for RubyEventStore based on ActiveRecord. Ships with database schema and migrations suitable for PostgreSQL, MySQL ans SQLite database engines. Includes repository implementation with linearized writes to achieve log-like properties of streams on top of SQL database engine.

UNIONs in ActiveRecord! Adds proper union and union_all methods to ActiveRecord::Relation.