Purge data from mysql innodb tables efficiently with low overhead and impact. Based on the Percona pt-archive utility.

Intergrate with ClearSale ClearID

Closet let you bury your records instead of killing them. Data is valuable even thoes you think worthless. Closet helps you bury/hide your records in closet, and restore them whenever you want. Colest only works with ActiveRecord(Mongoid will support in near future)

Watches multiple cloud computing accounts, records expenses by resource, and exposes a REST API to query the recorded costs

Pull statistics from Amazon CloudWatch into Graphite

This gem uses Amazon SimpleDB and other adapters, to track namespaced attributes for instances that need to cluster together. It provides a simple CLI which can be used in conjunction with other shell commands. See examples/ for example Cloudformation Templates.

CNifti is a wrapper for the standard C NIfTI 1 library found at http://afni.nimh.nih.gov/pub/dist/src/nifti/

Generates baseball player statistics

Lets you do cohort analysis based on two strategies: "big", which discards characteristics for the maximum cohort result, and "strict", which discards characteristics in order until a minimum cohort size is reached.

Notre Dame's Common Fedora Repository Model

Data push/pull between apps with local inbound/outbound queue and easy publish/process interface

Improves support for cross-schema, replication and mutli-DMS applications using ActiveRecord.

This library provides Ruby calls to interact with the Contactology email marketing API

Convertr works with database and handles converting tasks. It fetches files from remote sources and converts them to appropriate formats with ffmpeg

Provides reusable steps for Coulda acceptance testing of Rack/Rails applications

Система управления пользовательскими оповещениями и подписками

Sets up a consistent environment for evaluating programming packages.

An upgrade/port of ActiveMerchant's credit card class

A ruby client for CrowdPay's API using ActiveModel for easy to use ruby objects.This gem has been extracted from the Vested.org project courtesy of Calvert Foundation.

If you do not want to setup foreign keys with cascade and ActiveRecord's dependent is too slow for your big database, this is what you are looking for.