MIGRATION: Add index on application_events created_at

Author: rossta

app/models/application_event.rb

@@ -9,6 +9,10 @@
 #  created_at :datetime         not null
 #  updated_at :datetime         not null
 #
+# Indexes
+#
+#  index_application_events_on_created_at  (created_at)
+#
 class ApplicationEvent < ApplicationRecord
   serialize :data, coder: JSON
   serialize :metadata, coder: JSON

app/models/application_events/deploy.rb

@@ -1,3 +1,18 @@
+# == Schema Information
+#
+# Table name: application_events
+#
+#  id         :string           not null, primary key
+#  data       :text             not null
+#  metadata   :text
+#  type       :string           not null
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#
+# Indexes
+#
+#  index_application_events_on_created_at  (created_at)
+#
 module ApplicationEvents
   class Deploy < ::ApplicationEvent
     DATA_SCHEMA = {

db/migrate/20250123135323_index_application_events_created_at.rb

@@ -0,0 +1,5 @@
+class IndexApplicationEventsCreatedAt < ActiveRecord::Migration[8.1]
+  def change
+    add_index :application_events, :created_at
+  end
+end

db/schema.rb

@@ -1,3 +1,18 @@
+# == Schema Information
+#
+# Table name: application_events
+#
+#  id         :string           not null, primary key
+#  data       :text             not null
+#  metadata   :text
+#  type       :string           not null
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#
+# Indexes
+#
+#  index_application_events_on_created_at  (created_at)
+#
 FactoryBot.define do
   factory :application_event do
     data { {key: "value"}.to_json }

spec/factories/application_events.rb

@@ -9,6 +9,10 @@
 #  created_at :datetime         not null
 #  updated_at :datetime         not null
 #
+# Indexes
+#
+#  index_application_events_on_created_at  (created_at)
+#
 require "rails_helper"
 
 RSpec.describe ApplicationEvent, type: :model do

spec/models/application_event_spec.rb

@@ -1,3 +1,18 @@
+# == Schema Information
+#
+# Table name: application_events
+#
+#  id         :string           not null, primary key
+#  data       :text             not null
+#  metadata   :text
+#  type       :string           not null
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#
+# Indexes
+#
+#  index_application_events_on_created_at  (created_at)
+#
 require "rails_helper"
 
 RSpec.describe ApplicationEvents::Deploy do