Merge pull request #1524 from sul-dlss/info-cache

Cache the json response for 5 minutes

Author: jcoyne

app/services/iiif_metadata_service.rb

@@ -66,7 +66,7 @@ def handle_response(conn)
   end
 
   def json
-    @json ||= begin
+    @json ||= Rails.cache.fetch(cache_key, expires_in: 5.minutes) do
       retrieved_json = retrieve
       JSON.parse(retrieved_json).tap do |data|
         data['@id'] = @canonical_url
@@ -75,4 +75,8 @@ def json
       raise Stacks::UnexpectedMetadataResponseError, "There was a problem fetching #{@url}. #{e}: #{retrieved_json}"
     end
   end
+
+  def cache_key
+    "iiif_metadata/#{Digest::SHA256.hexdigest(@url)}"
+  end
 end