What is Rails Elastic Sensitivity?

Elastic sensitivity is an approach which was invented by UBER for efficiently approximating the local sensitivity of a query, which can be used to enforce differential privacy for the query. The approach requires only a static analysis of the query and therefore imposes minimal performance overhead. Importantly, it does not require any changes to the database. Details of the approach are available in this paper.

This Project implement this mechanism on Rails to achieve counting query with any DataBase Rails support (MySQL, PostSQL, SQLite, etc).

Installation

Add this line to your application's Gemfile:

# Lastest Version
gem 'rails_elastic_sensitivity'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install rails_elastic_sensitivity

Usage

Single Join Example:

# Create Instance
es = ElaticSensitivity.new(:user)

# See true query result
es.joins(:gamecharacters).where(gamecharacters: {course_id: 100}).count

# See query result with elastic sensitivity mechanism
es.joins(:gamecharacters).where(gamecharacters: {course_id: 100}).elastic_count

Double Join Example:

es = ElaticSensitivity.new(:user)
es.joins(gamecharacters: :gc_achievements).where(gamecharacters: {course_id: 1}).count
es.joins(gamecharacters: :gc_achievements).where(gamecharacters: {course_id: 1}).elastic_count

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/rails_elastic_sensitivity. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The gem is available as open source under the terms of the MIT License.

Code of Conduct

Everyone interacting in the RailsElasticSensitivity project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.