Revert "PERF: use distributed cache for site text and category slugs"

This reverts commit a97f2eee054bbd5a252e7cc28ea11210b2a8a82d.

lib/site_text_class_methods.rb

@@ -15,16 +15,39 @@ module SiteTextClassMethods
     @types << SiteTextType.new(text_type, format, opts)
   end
 
-  def text_for_cache
-    @text_for_cache ||= DistributedCache.new("text_for_cache")
-  end
-
   def text_for(text_type, replacements=nil)
     text = nil
-    text = text_for_cache[text_type] if replacements.blank?
+    text = cached_text_for(text_type) if replacements.blank?
     text ||= uncached_text_for(text_type, replacements)
   end
 
+  def cached_text_for(text_type)
+    ensure_subscribed!
+    @mutex.synchronize do
+      cache = @text_for_cache[RailsMultisite::ConnectionManagement.current_db]
+      cache[text_type] if cache
+    end
+  end
+
+  def store_cached_text_for(text_type, result)
+    ensure_subscribed!
+    @mutex.synchronize do
+      cache = (@text_for_cache[RailsMultisite::ConnectionManagement.current_db] ||= {})
+      cache[text_type] = result
+    end
+  end
+
+  def ensure_subscribed!
+    return if @subscribed
+    @mutex.synchronize do
+      MessageBus.subscribe("/text_for") do |message|
+        @mutex.synchronize do
+          @text_for_cache[message.site_id] = nil
+        end
+      end
+    end
+  end
+
   def uncached_text_for(text_type, replacements=nil)
     store_cache = replacements.blank?
 
@@ -48,7 +71,7 @@ module SiteTextClassMethods
 
     if store_cache
       result.freeze
-      text_for_cache[text_type] = result
+      store_cached_text_for(text_type, result)
     end
 
     result