Merge branch 'speed-improvement' into 'develop'

Migrations: Add activities_actor_type index

See merge request pleroma/pleroma!4341

changelog.d/activity_type_index.change

@@ -0,0 +1 @@
+Add new activity actor/type index. Greatly speeds up retrieval of rare types (like "Listen")

config/config.exs

@@ -48,7 +48,7 @@ config :pleroma, ecto_repos: [Pleroma.Repo]
 
 config :pleroma, Pleroma.Repo,
   telemetry_event: [Pleroma.Repo.Instrumenter],
-  migration_lock: nil
+  migration_lock: :pg_advisory_lock
 
 config :pleroma, Pleroma.Captcha,
   enabled: true,

priv/repo/migrations/20250314153704_add_activities_actor_type_index.exs

@@ -0,0 +1,14 @@
+defmodule Pleroma.Repo.Migrations.AddActivitiesActorTypeIndex do
+  use Ecto.Migration
+  @disable_ddl_transaction true
+
+  def change do
+    create(
+      index(
+        :activities,
+        ["actor", "(data ->> 'type'::text)", "id DESC NULLS LAST"],
+        concurrently: true
+      )
+    )
+  end
+end