我不是100％确定这是解决方案，但我添加了"memcachier" gem (我没有)并将我的production.rb更改为:

I am not 100% sure this is the solution but I added the 'memcachier' gem (which I didn't have) and altered my production.rb to:

  config.cache_store = :dalli_store

这实际上还解决了另一个完全不同的问题，我的大惊喜！

This actually also solved another, completely different issue, to my great surprise!