db2fog provides rake tasks for backing up and restoring your DB to cloud storage providers

Define indexes and foreign keys for your Rails app in one place using an easy-to-read DSL, then run a rake task to bring your database up-to-date.

Automatically tests your Rails app for common database query mistakes

Obtain manual db locks to guard blocks of code from parallel execution.Supports mysql, postgres and ms-sql-server.

helps manage db dumps and imports via rake tasks

Tool for managing and executing your database migrations. It supports multiple databases and multiple languages for writing migration scripts.

A database schema management tool that reads a "single-source-of-truth" schema definition from a ruby file and auto-migrates the database to conform to it.

ddbcli is an interactive command-line client of Amazon DynamoDB.

Database-based git server

Detect and show a maintenance page

A gem to make using https://deadmanssnitch.com simple.

Dead Simple CMS is a library for modifying different parts of your website without the overhead of having a fullblown CMS. The idea with this library is simple: provide an easy way to hook into different parts of your application (not only views) by defining the different parts to modify in an easy, straight-forward DSL. The basic components of this library include: * A DSL to define the changeable values in your app * Form generators based on SimpleForm (with or without Bootstrap) and default rails FormBuilder * Expandable storage mechanisms so you can store the data in different locations * Currently supported: Redis, Database, Memcache, even Memory (for testing) * Presenters/renderers so you can take groups of variables and render them into your views (ie image_tag) What it doesn't have: * Versioning - be able to look at old versions of the content * Timing - set start and end time for different content * Page builder tools - this is not the right tool if you want to design full pages

Background thread debouncing for Ruby.

Utilities for better "print debugging"

This rubygem does not have a description or summary.

Decouplio is a zero dependency, thread safe and framework agnostic gem designed to encapsulate application business logic. It's reverse engineered through TDD and inspired by such frameworks and gems like Trailblazer, Interactor.

When you have a system of objects that have many references to each other, it becomes an issue to be able to clone properly that object graph. There may be control objects you may not want to clone, but maintain references to. And some references you may not wish to clone at all. Enter DeepDive. Allows you a means by which you can do controlled deep cloning or copying of your complex interconnected objects.

A sibling of ostruct that handles deeply nested structures and basic data type detection

Deferrable Gratification (DG) facilitates asynchronous programming in Ruby, by helping create abstractions around complex operations built up from simpler ones. It helps make asynchronous code less error-prone and easier to compose. It also provides some enhancements to the Deferrable API. Features include: * fluent (aka chainable) syntax for registering multiple callbacks and errbacks to the same Deferrable. * a #bothback method for registering code to run on either success or failure. * a combinator library for building up complex asynchronous operations out of simpler ones.

Makes ActiveRecord defer/postpone saving the records you add to an habtm (has_and_belongs_to_many) or has_many association until you call model.save, allowing validation in the style of normal attributes. Additionally you can check inside before_save filters, if the association was altered.