Fix: #284 FetchInstanceInfoWorkerが原因でSidekiqのJobが詰まる問題 (#342)

* Fix: #284 `FetchInstanceInfoWorker`が原因でSidekiqのJobが詰まる問題

* Fix: InstanceInfoを取得するタイミング

* Fix test

* Fix test

* Fix: HTTPコード

* 調整

app/services/activitypub/process_account_service.rb

@@ -46,7 +46,6 @@ class ActivityPub::ProcessAccountService < BaseService
         end
 
         create_account
-        fetch_instance_info
       end
 
       update_account
@@ -66,6 +65,8 @@ class ActivityPub::ProcessAccountService < BaseService
       check_links! if @account.fields.any?(&:requires_verification?)
     end
 
+    fetch_instance_info
+
     @account
   rescue Oj::ParseError
     nil
@@ -210,7 +211,7 @@ class ActivityPub::ProcessAccountService < BaseService
   end
 
   def fetch_instance_info
-    ActivityPub::FetchInstanceInfoWorker.perform_async(@account.domain) unless InstanceInfo.exists?(domain: @account.domain)
+    ActivityPub::FetchInstanceInfoWorker.perform_async(@account.domain) unless Rails.cache.exist?("fetch_instance_info:#{@account.domain}", expires_in: 1.day)
   end
 
   def actor_type