added index on time to posts

db/migrate/20230802222353_add_index_on_time.rb

···
+class AddIndexOnTime < ActiveRecord::Migration[6.1]
+  def change
+    add_index :posts, :time
+  end
+end

db/schema.rb

···
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2023_07_27_134424) do
+ActiveRecord::Schema.define(version: 2023_08_02_222353) do
 
   create_table "feed_posts", force: :cascade do |t|
     t.integer "feed_id", null: false
···
     t.text "data", null: false
     t.string "rkey", null: false
     t.index ["rkey"], name: "index_posts_on_rkey"
+    t.index ["time"], name: "index_posts_on_time"
   end
 
   create_table "subscriptions", force: :cascade do |t|