Simply cache whatever you want by using cachers which will help you maintain cached objects and expire them when they are changed. Support Rails 3, 4, 5.

Make ActiveRecord null model aware.

Contains everything necessary to build and run projection servers for Rails Disco. Projections process events into database models that are optimized for the Rails views. Have a look at the rails-disco documentation on Github for more details.

Amazon Aurora Serverless is an on-demand, auto-scaling configuration for Amazon Aurora (MySQL-compatible and PostgreSQL-compatible editions). Perfect for small Rails on AWS Lambda.

Makes read-only models easier to implement in ActiveRecord 3.x/4.x/5.x.

Exposes a bulk insert API to AR subclasses

Colorized SQL Logging Backport for ActiveRecord. See http://git.io/vmlOb

ActiveRecordDistinctOn adds support for `DISTINCT ON` to ActiveRecord. At the time of this writing, PostgreSQL is the only database which supports this syntax; however, this gem has been written with database independence in mind so that if another Arel visitor adds support for `Arel::Nodes::Dist...

Provides transparent encryption for ActiveRecord. You can protect your data with any encryption algorithm you want.

ActiveRecord Firebird Adapter for Rails 3 and 4 with support for migrations.

Save unnecessary round trips to the database

An ActiveRecord plugin providing a higher-level abstraction for SQL 'LIKE' queries

Add unsigned option to integer type for ActiveRecord's MySQL2 adapter

ActiveRecord OpenTracing intrumenter

Support for Postgres Notify/Listen

An Active Record extension for Multitenancy with PostgreSQL Row Level Security

Automatic database view creation for ActiveRecord

acts_as_account implements double entry accounting for Rails models. Your models get accounts and you can do consistent transactions between them. Since the documentation is sparse, see the transfer.feature for usage examples.

Provides various extensions to the Rails ActiveRecord adapters.

ActiveRecord::Base.connection.after_transaction_commit { ... }