Unuse ActiveRecord::Base#cache_key

app/controllers/accounts_controller.rb

@@ -42,7 +42,7 @@ def show
       format.json do
         skip_session!
 
-        render_cached_json(['activitypub', 'actor', @account.cache_key], content_type: 'application/activity+json') do
+        render_cached_json(['activitypub', 'actor', @account], content_type: 'application/activity+json') do
           ActiveModelSerializers::SerializableResource.new(@account, serializer: ActivityPub::ActorSerializer, adapter: ActivityPub::Adapter)
         end
       end

app/controllers/api/v1/statuses_controller.rb

@@ -17,7 +17,7 @@ class Api::V1::StatusesController < Api::BaseController
   CONTEXT_LIMIT = 4_096
 
   def show
-    cached  = Rails.cache.read(@status.cache_key)
+    cached  = Rails.cache.read(@status)
     @status = cached unless cached.nil?
     render json: @status, serializer: REST::StatusSerializer
   end

app/controllers/application_controller.rb

@@ -103,24 +103,20 @@ def cache_collection(raw, klass)
     return raw unless klass.respond_to?(:with_includes)
 
     raw                    = raw.cache_ids.to_a if raw.is_a?(ActiveRecord::Relation)
-    uncached_ids           = []
-    cached_keys_with_value = Rails.cache.read_multi(*raw.map(&:cache_key))
-
-    raw.each do |item|
-      uncached_ids << item.id unless cached_keys_with_value.key?(item.cache_key)
-    end
+    cached_keys_with_value = Rails.cache.read_multi(*raw).transform_keys(&:id)
+    uncached_ids           = raw.map(&:id) - cached_keys_with_value.keys
 
     klass.reload_stale_associations!(cached_keys_with_value.values) if klass.respond_to?(:reload_stale_associations!)
 
     unless uncached_ids.empty?
       uncached = klass.where(id: uncached_ids).with_includes.map { |item| [item.id, item] }.to_h
 
       uncached.each_value do |item|
-        Rails.cache.write(item.cache_key, item)
+        Rails.cache.write(item, item)
       end
     end
 
-    raw.map { |item| cached_keys_with_value[item.cache_key] || uncached[item.id] }.compact
+    raw.map { |item| cached_keys_with_value[item.id] || uncached[item.id] }.compact
   end
 
   def respond_with_error(code)
@@ -135,7 +131,6 @@ def respond_with_error(code)
 
   def render_cached_json(cache_key, **options)
     options[:expires_in] ||= 3.minutes
-    cache_key              = cache_key.join(':') if cache_key.is_a?(Enumerable)
     cache_public           = options.key?(:public) ? options.delete(:public) : true
     content_type           = options.delete(:content_type) || 'application/json'
 

app/controllers/emojis_controller.rb

@@ -9,7 +9,7 @@ def show
       format.json do
         skip_session!
 
-        render_cached_json(['activitypub', 'emoji', @emoji.cache_key], content_type: 'application/activity+json') do
+        render_cached_json(['activitypub', 'emoji', @emoji], content_type: 'application/activity+json') do
           ActiveModelSerializers::SerializableResource.new(@emoji, serializer: ActivityPub::EmojiSerializer, adapter: ActivityPub::Adapter)
         end
       end

app/controllers/statuses_controller.rb

@@ -33,7 +33,7 @@ def show
       format.json do
         skip_session! unless @stream_entry.hidden?
 
-        render_cached_json(['activitypub', 'note', @status.cache_key], content_type: 'application/activity+json', public: !@stream_entry.hidden?) do
+        render_cached_json(['activitypub', 'note', @status], content_type: 'application/activity+json', public: !@stream_entry.hidden?) do
           ActiveModelSerializers::SerializableResource.new(@status, serializer: ActivityPub::NoteSerializer, adapter: ActivityPub::Adapter)
         end
       end
@@ -43,7 +43,7 @@ def show
   def activity
     skip_session!
 
-    render_cached_json(['activitypub', 'activity', @status.cache_key], content_type: 'application/activity+json', public: !@stream_entry.hidden?) do
+    render_cached_json(['activitypub', 'activity', @status], content_type: 'application/activity+json', public: !@stream_entry.hidden?) do
       ActiveModelSerializers::SerializableResource.new(@status, serializer: ActivityPub::ActivitySerializer, adapter: ActivityPub::Adapter)
     end
   end