Queues system for AR/Rails based on PgQ Skytools for PostgreSQL, like Resque on Redis. Rails 2.3 and 3 compatible.

Console utility for gracefully rebuild indexes/pkeys for PostgreSQL, with minimal locking in semi-auto mode.

Sends messages to kafka using different formats and strategies

Pipeline is a Rails plugin/gem to run asynchronous processes in a configurable pipeline.

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.

ActiveRecord plugin to prevent destroy when associations are present

Super simple way to store prices

Define and enforce pricing plan limits in your Rails SaaS (entitlements, quotas, feature gating). pricing_plans acts as your single source of truth for pricing plans. Define a pricing catalog with feature gating, persistent caps, per‑period allowances, grace periods, and get view/controller/model...

Procore Ruby Gem

Manage the parameterized prompts (text) used in generative AI (aka chatGPT, OpenAI, et.al.) using storage adapters such as FileSystemAdapter, SqliteAdapter, and ActiveRecordAdapter.

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