improve initial importer show page load time

db/migrate/20241205212513_faster_first_entry.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+class FasterFirstEntry < ActiveRecord::Migration[5.2]
+  def change
+    add_index :bulkrax_entries, [:importerexporter_id, :importerexporter_type, :id], name: 'index_bulkrax_entries_on_importerexporter_id_type_and_id' unless index_exists?(:bulkrax_entries, [:importerexporter_id, :importerexporter_type, :id],
+      name: 'index_bulkrax_entries_on_importerexporter_id_type_and_id')
+  end
+end

spec/test_app/db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2024_12_03_010707) do
+ActiveRecord::Schema.define(version: 2024_12_05_212513) do
 
   create_table "accounts", force: :cascade do |t|
     t.string "name"
@@ -44,6 +44,7 @@
     t.string "status_message", default: "Pending"
     t.string "error_class"
     t.index ["identifier", "importerexporter_id", "importerexporter_type"], name: "bulkrax_identifier_idx"
+    t.index ["importerexporter_id", "importerexporter_type", "id"], name: "index_bulkrax_entries_on_importerexporter_id_type_and_id"
     t.index ["importerexporter_id", "importerexporter_type"], name: "bulkrax_entries_importerexporter_idx"
     t.index ["type"], name: "index_bulkrax_entries_on_type"
   end
@@ -103,8 +104,6 @@
     t.integer "total_file_set_entries", default: 0
     t.integer "processed_works", default: 0
     t.integer "failed_works", default: 0
-    t.integer "processed_children", default: 0
-    t.integer "failed_children", default: 0
     t.index ["importer_id"], name: "index_bulkrax_importer_runs_on_importer_id"
   end