Polo travels through your database and creates sample snapshots so you can work with real world data in development.

Choose per model and/or controller&action whether a read-only query should be sent to master or a hot standby. Or just use Postamt.on(:slave) { ... }.

Adds helpers to migrations and dumps check constraints to schema.rb

Uses Postgres's powerful COPY command to upsert large sets of data into ActiveRecord tables

Adds support for CTEs for PostgreSQL and ActiveRecord

Thin ActiveRecord Redshift Adapter extension for existing PostgreSQL adapter.

Ruby/Rails DSL for Prediction.io, an open source machine learning server.

Predictive loader

A better API for ActiveRecord eager loading

Preload association or scope counts. This can greatly reduce the number of queries you have to perform and thus yield great performance gains.

APN on Rails is a Ruby on Rails gem that allows you to easily add Apple Push Notification (iPhone) support to your Rails application. This version includes an association between an assumed User model and APN::Device

ActiveRecord plugin to prevent destroy when associations are present

Super simple way to store prices

Procore Ruby Gem

Runs regular Rails/ActiveRecord migrations via the Percona Toolkit pt-online-schema-change tool.

APNS support for the modular push daemon.

Adds callback hooks for your ActiveModel models for sending messages to a Pusher channel.

Ruby gem developed to help with pagination, filtering, sorting, and including associations on both active record queries and custom sql queries

Installs two database functions, `quick_count` and `count_estimate` for getting count estimations on large tables

Returns random records for Ruby Models fast and quick