From 94e5e834f2ddbc791ab27e2ef17eb2f23140a6ba Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
Date: Tue, 26 Mar 2019 00:36:35 +0100
Subject: [PATCH] Improve performance of list of blocked domains by caching
 counts (#10374)

---
 app/models/instance.rb                    | 6 +++++-
 app/views/admin/instances/index.html.haml | 2 +-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/app/models/instance.rb b/app/models/instance.rb
index 7448d465c..7bf000d40 100644
--- a/app/models/instance.rb
+++ b/app/models/instance.rb
@@ -7,7 +7,7 @@ class Instance
 
   def initialize(resource)
     @domain         = resource.domain
-    @accounts_count = resource.accounts_count
+    @accounts_count = resource.is_a?(DomainBlock) ? nil : resource.accounts_count
     @domain_block   = resource.is_a?(DomainBlock) ? resource : DomainBlock.find_by(domain: domain)
   end
 
@@ -15,6 +15,10 @@ class Instance
     Rails.cache.fetch("#{cache_key}/sample_accounts", expires_in: 12.hours) { Account.where(domain: domain).searchable.joins(:account_stat).popular.limit(3) }
   end
 
+  def cached_accounts_count
+    @accounts_count || Rails.cache.fetch("#{cache_key}/count", expires_in: 12.hours) { Account.where(domain: domain).count }
+  end
+
   def to_param
     domain
   end
diff --git a/app/views/admin/instances/index.html.haml b/app/views/admin/instances/index.html.haml
index 235927140..9574c3147 100644
--- a/app/views/admin/instances/index.html.haml
+++ b/app/views/admin/instances/index.html.haml
@@ -33,7 +33,7 @@
       %h4
         = instance.domain
         %small
-          = t('admin.instances.known_accounts', count: instance.accounts_count)
+          = t('admin.instances.known_accounts', count: instance.cached_accounts_count)
 
           - if instance.domain_block
             - if !instance.domain_block.noop?