Add expiry to YARD pages

Author: lsegal

app/controllers/concerns/cacheable.rb

@@ -8,6 +8,6 @@ module Cacheable
   private
 
   def set_cache_headers
-    expires_in 1.hour, public: true
+    expires_in 1.day, public: true
   end
 end

app/controllers/yard_controller.rb

@@ -62,6 +62,8 @@ def respond
     if status == 404
       render "errors/library_not_found", status: 404, layout: "application"
       return
+    elsif status == 200
+      expires_in 1.day, public: true
     end
 
     Rails.cache.delete(cache_key) if library_version&.ready? && (status != 200 || body.first.blank?)