diff --git a/lib/pleroma/application.ex b/lib/pleroma/application.ex
index 7bbc132f12..00103abf25 100644
--- a/lib/pleroma/application.ex
+++ b/lib/pleroma/application.ex
@@ -210,7 +210,8 @@ defp cachex_children do
         expiration: chat_message_id_idempotency_key_expiration(),
         limit: 500_000
       ),
-      build_cachex("rel_me", limit: 2500)
+      build_cachex("rel_me", limit: 2500),
+      build_cachex("domain", limit: 2500)
     ]
   end
 
diff --git a/lib/pleroma/domain.ex b/lib/pleroma/domain.ex
index d1c633a930..6d518fe00a 100644
--- a/lib/pleroma/domain.ex
+++ b/lib/pleroma/domain.ex
@@ -2,6 +2,8 @@
 # Copyright © 2017-2023 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 defmodule Pleroma.Domain do
+  @cachex Pleroma.Config.get([:cachex, :provider], Cachex)
+
   use Ecto.Schema
 
   import Ecto.Changeset
@@ -11,6 +13,7 @@ defmodule Pleroma.Domain do
 
   schema "domains" do
     field(:domain, :string, default: "")
+    field(:service_domain, :string, default: "")
     field(:public, :boolean, default: false)
     field(:resolves, :boolean, default: false)
     field(:last_checked_at, :naive_datetime)
@@ -22,8 +25,10 @@ def changeset(%__MODULE__{} = domain, params \\ %{}) do
     domain
     |> cast(params, [:domain, :public])
     |> validate_required([:domain])
+    |> maybe_add_service_domain()
     |> update_change(:domain, &String.downcase/1)
     |> unique_constraint(:domain)
+    |> unique_constraint(:service_domain)
   end
 
   def update_changeset(%__MODULE__{} = domain, params \\ %{}) do
@@ -42,6 +47,12 @@ def update_state_changeset(%__MODULE__{} = domain, resolves) do
     )
   end
 
+  defp maybe_add_service_domain(%{changes: %{service_domain: _}} = changeset), do: changeset
+
+  defp maybe_add_service_domain(%{changes: %{domain: domain}} = changeset) do
+    change(changeset, service_domain: domain)
+  end
+
   def list do
     __MODULE__
     |> order_by(asc: :id)
@@ -66,4 +77,8 @@ def delete(id) do
     get(id)
     |> Repo.delete()
   end
+
+  def cached_list do
+    @cachex.fetch!(:domain_cache, "domains_list", fn _ -> list() end)
+  end
 end
diff --git a/lib/pleroma/web/admin_api/controllers/domain_controller.ex b/lib/pleroma/web/admin_api/controllers/domain_controller.ex
index 832f6288c0..3dd42c59a0 100644
--- a/lib/pleroma/web/admin_api/controllers/domain_controller.ex
+++ b/lib/pleroma/web/admin_api/controllers/domain_controller.ex
@@ -3,6 +3,8 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.AdminAPI.DomainController do
+  @cachex Pleroma.Config.get([:cachex, :provider], Cachex)
+
   use Pleroma.Web, :controller
 
   alias Pleroma.Domain
@@ -37,7 +39,8 @@ def index(conn, _) do
   def create(%{body_params: params} = conn, _) do
     with {:domain_not_used, true} <-
            {:domain_not_used, params[:domain] !== Pleroma.Web.WebFinger.domain()},
-         {:ok, domain} <- Domain.create(params) do
+         {:ok, domain} <- Domain.create(params),
+         _ <- @cachex.del(:domain, :domains_list) do
       Pleroma.Workers.CheckDomainResolveWorker.enqueue("check_domain_resolve", %{
         "id" => domain.id
       })
@@ -59,11 +62,14 @@ def update(%{body_params: params} = conn, %{id: id}) do
       params
       |> Domain.update(id)
 
+    @cachex.del(:domain, :domains_list)
+
     render(conn, "show.json", domain: domain)
   end
 
   def delete(conn, %{id: id}) do
-    with {:ok, _} <- Domain.delete(id) do
+    with {:ok, _} <- Domain.delete(id),
+         _ <- @cachex.del(:domain, :domains_list) do
       json(conn, %{})
     else
       _ -> json_response(conn, :bad_request, "")
diff --git a/lib/pleroma/web/api_spec/operations/admin/domain_operation.ex b/lib/pleroma/web/api_spec/operations/admin/domain_operation.ex
index d73c67b3d5..a91872f976 100644
--- a/lib/pleroma/web/api_spec/operations/admin/domain_operation.ex
+++ b/lib/pleroma/web/api_spec/operations/admin/domain_operation.ex
@@ -84,6 +84,7 @@ defp create_request do
       required: [:domain],
       properties: %{
         domain: %Schema{type: :string},
+        service_domain: %Schema{type: :string, nullable: true},
         public: %Schema{type: :boolean, nullable: true}
       }
     }
@@ -104,7 +105,10 @@ defp domain do
       properties: %{
         id: %Schema{type: :integer},
         domain: %Schema{type: :string},
-        public: %Schema{type: :boolean}
+        service_domain: %Schema{type: :string},
+        public: %Schema{type: :boolean},
+        resolves: %Schema{type: :boolean},
+        last_checked_at: %Schema{type: :string, format: "date-time", nullable: true}
       }
     }
   end
diff --git a/lib/pleroma/web/mastodon_api/views/instance_view.ex b/lib/pleroma/web/mastodon_api/views/instance_view.ex
index 9f78c279c0..ecc546ce73 100644
--- a/lib/pleroma/web/mastodon_api/views/instance_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/instance_view.ex
@@ -152,7 +152,7 @@ defp multitenancy do
     if enabled do
       domains =
         [%Domain{id: "", domain: Pleroma.Web.WebFinger.domain(), public: true}] ++
-          Repo.all(Domain)
+          Domain.cached_list()
 
       %{
         enabled: true,
diff --git a/priv/repo/migrations/20230618190919_create_domains.exs b/priv/repo/migrations/20230618190919_create_domains.exs
index 9994a46829..cfb1498949 100644
--- a/priv/repo/migrations/20230618190919_create_domains.exs
+++ b/priv/repo/migrations/20230618190919_create_domains.exs
@@ -4,6 +4,7 @@ defmodule Pleroma.Repo.Migrations.CreateDomains do
   def change do
     create_if_not_exists table(:domains) do
       add(:domain, :citext)
+      add(:service_domain, :citext)
       add(:public, :boolean)
       add(:resolves, :boolean)
       add(:last_checked_at, :naive_datetime)
@@ -12,6 +13,7 @@ def change do
     end
 
     create_if_not_exists(unique_index(:domains, [:domain]))
+    create_if_not_exists(unique_index(:domains, [:service_domain]))
 
     alter table(:users) do
       add(:domain_id, references(:domains))