use Cache.hash instead of Cache.sanitize

app/models/post.rb

@@ -1183,7 +1183,7 @@ class Post < ApplicationRecord
         tags = "#{tags} -status:deleted".strip
       end
 
-      "pfc:#{Cache.sanitize(tags)}"
+      "pfc:#{Cache.hash(tags)}"
     end
 
     def fast_count(tags = "", options = {})

app/models/tag.rb

@@ -99,7 +99,7 @@ class Tag < ApplicationRecord
         if options[:disable_caching]
           select_category_for(tag_name)
         else
-          Cache.get("tc:#{Cache.sanitize(tag_name)}") do
+          Cache.get("tc:#{Cache.hash(tag_name)}") do
             select_category_for(tag_name)
           end
         end
@@ -146,7 +146,7 @@ class Tag < ApplicationRecord
     end
 
     def update_category_cache
-      Cache.put("tc:#{Cache.sanitize(name)}", category, 1.hour)
+      Cache.put("tc:#{Cache.hash(name)}", category, 1.hour)
     end
   end
 
@@ -752,7 +752,7 @@ class Tag < ApplicationRecord
         if post_count < COSINE_SIMILARITY_RELATED_TAG_THRESHOLD
           delay(:queue => "default").update_related
         elsif post_count >= COSINE_SIMILARITY_RELATED_TAG_THRESHOLD
-          key = Cache.sanitize(name)
+          key = Cache.hash(name)
           cache_check = Cache.get("urt:#{key}")
 
           if cache_check

app/models/tag_alias.rb

@@ -20,7 +20,7 @@ class TagAlias < TagRelationship
 
     module ClassMethods
       def clear_cache_for(name)
-        Cache.delete("ta:#{Cache.sanitize(name)}")
+        Cache.delete("ta:#{Cache.hash(name)}")
       end
     end