ActiveReplica

ActiveReplica makes it super-easy (and performant) to use a read-only replica with ActiveRecord

Installation

gem 'activereplica'

Usage

# add named replicas
>> ActiveReplica.add_replica(:follower_1, adapter: "sqlite3", database: "replica1.sqlite")
>> ActiveReplica.add_replica(:follower_2, adapter: "sqlite3", database: "replica2.sqlite")

# get a list of replicas
>> ActiveReplica.replicas
=> [:follower_1, :follower_2]

# use a specified replica
>> ActiveReplica.with_replica(:follower_1) do
>>   User.count
>> end

That's it

Logging

Replica logging is not enabled by default.

If you want it, you can just require it.

require 'active_replica/logging'

Then your logs will get decorated.

[Replica: follower_1]   (6.6ms)  SELECT COUNT(*) FROM "users"