From cc6e3c39001c11c82b198e357dd5d3e3fc032637 Mon Sep 17 00:00:00 2001
From: ThibG <thib@sitedethib.com>
Date: Thu, 4 Apr 2019 01:30:44 +0200
Subject: [PATCH] Cache featured collections, as well as outbox, followers and
 following (#10467)

---
 .../activitypub/collections_controller.rb        | 16 +++++++++++-----
 .../activitypub/outboxes_controller.rb           |  6 ++++++
 app/controllers/follower_accounts_controller.rb  |  7 +++++++
 app/controllers/following_accounts_controller.rb |  9 +++++++++
 4 files changed, 33 insertions(+), 5 deletions(-)

diff --git a/app/controllers/activitypub/collections_controller.rb b/app/controllers/activitypub/collections_controller.rb
index 995da9c55..853f4f907 100644
--- a/app/controllers/activitypub/collections_controller.rb
+++ b/app/controllers/activitypub/collections_controller.rb
@@ -6,13 +6,19 @@ class ActivityPub::CollectionsController < Api::BaseController
   before_action :set_account
   before_action :set_size
   before_action :set_statuses
+  before_action :set_cache_headers
 
   def show
-    render json: collection_presenter,
-           serializer: ActivityPub::CollectionSerializer,
-           adapter: ActivityPub::Adapter,
-           content_type: 'application/activity+json',
-           skip_activities: true
+    skip_session!
+
+    render_cached_json(['activitypub', 'collection', @account, params[:id]], content_type: 'application/activity+json') do
+      ActiveModelSerializers::SerializableResource.new(
+        collection_presenter,
+        serializer: ActivityPub::CollectionSerializer,
+        adapter: ActivityPub::Adapter,
+        skip_activities: true
+      )
+    end
   end
 
   private
diff --git a/app/controllers/activitypub/outboxes_controller.rb b/app/controllers/activitypub/outboxes_controller.rb
index be4289b21..438fa226e 100644
--- a/app/controllers/activitypub/outboxes_controller.rb
+++ b/app/controllers/activitypub/outboxes_controller.rb
@@ -7,8 +7,14 @@ class ActivityPub::OutboxesController < Api::BaseController
 
   before_action :set_account
   before_action :set_statuses
+  before_action :set_cache_headers
 
   def show
+    unless page_requested?
+      skip_session!
+      expires_in 1.minute, public: true
+    end
+
     render json: outbox_presenter, serializer: ActivityPub::OutboxSerializer, adapter: ActivityPub::Adapter, content_type: 'application/activity+json'
   end
 
diff --git a/app/controllers/follower_accounts_controller.rb b/app/controllers/follower_accounts_controller.rb
index aea42bd63..713365ea5 100644
--- a/app/controllers/follower_accounts_controller.rb
+++ b/app/controllers/follower_accounts_controller.rb
@@ -3,6 +3,8 @@
 class FollowerAccountsController < ApplicationController
   include AccountControllerConcern
 
+  before_action :set_cache_headers
+
   def index
     respond_to do |format|
       format.html do
@@ -17,6 +19,11 @@ class FollowerAccountsController < ApplicationController
       format.json do
         raise Mastodon::NotPermittedError if params[:page].present? && @account.user_hides_network?
 
+        if params[:page].blank?
+          skip_session!
+          expires_in 3.minutes, public: true
+        end
+
         render json: collection_presenter,
                serializer: ActivityPub::CollectionSerializer,
                adapter: ActivityPub::Adapter,
diff --git a/app/controllers/following_accounts_controller.rb b/app/controllers/following_accounts_controller.rb
index 03c4b1046..1bfd901cf 100644
--- a/app/controllers/following_accounts_controller.rb
+++ b/app/controllers/following_accounts_controller.rb
@@ -3,9 +3,13 @@
 class FollowingAccountsController < ApplicationController
   include AccountControllerConcern
 
+  before_action :set_cache_headers
+
   def index
     respond_to do |format|
       format.html do
+        mark_cacheable! unless user_signed_in?
+
         next if @account.user_hides_network?
 
         follows
@@ -15,6 +19,11 @@ class FollowingAccountsController < ApplicationController
       format.json do
         raise Mastodon::NotPermittedError if params[:page].present? && @account.user_hides_network?
 
+        if params[:page].blank?
+          skip_session!
+          expires_in 3.minutes, public: true
+        end
+
         render json: collection_presenter,
                serializer: ActivityPub::CollectionSerializer,
                adapter: ActivityPub::Adapter,