我想尽量减少对Youtube API的调用,因为这些数据不经常刷新。当我尝试缓存它时:
Rails.cache.fetch("youtube-#{@yt_name}", :expires_in => 1.day) do
@youtube_doc = Nokogiri::XML(open("https://gdata.youtube.com/feeds/api/users/#{@yt_name}/uploads"))
end
我在 heroku 中收到一个错误:
Marshalling error for key 'youtube-NAME': no marshal_dump is defined for class Nokogiri::XML::NodeSet
You are trying to cache a Ruby object which cannot be serialized to memcached.
有什么想法吗?
您可能希望缓存 XML 而不是 Nokogiri 对象。试试这个:
xml = Rails.cache.fetch("youtube-#{@yt_name}", :expires_in => 1.day) do
open("https://gdata.youtube.com/feeds/api/users/#{@yt_name}/uploads").read
end
@youtube_doc = Nokogiri::XML(xml)