allow caching options to be specified for counting services

app/services/base_count_service.rb

@@ -9,7 +9,7 @@ class BaseCountService
   end
 
   def count
-    Rails.cache.fetch(cache_key, raw: raw?) { uncached_count }.to_i
+    Rails.cache.fetch(cache_key, cache_options) { uncached_count }.to_i
   end
 
   def refresh_cache
@@ -31,4 +31,10 @@ class BaseCountService
   def cache_key
     raise NotImplementedError, 'cache_key must be implemented and return a String'
   end
+
+  # subclasses can override to add any specific options, such as
+  #   super.merge({ expires_in: 5.minutes })
+  def cache_options
+    { raw: raw? }
+  end
 end

spec/services/base_count_service_spec.rb

@@ -77,4 +77,10 @@ describe BaseCountService, :use_clean_rails_memory_store_caching do
       expect { service.cache_key }.to raise_error(NotImplementedError)
     end
   end
+
+  describe '#cache_options' do
+    it 'returns the default in options' do
+      expect(service.cache_options).to eq({ raw: false })
+    end
+  end
 end