Just spent three hours debugging a thing that turned out to be a cache issue. I think a big part of the problem is that it's not always obvious that the resourc

Just spent three hours debugging a thing that turned out to be a cache issue. I think a big part of the problem is that it's not always obvious that the resource is coming from a cache. Some proxy somewhere is serving old data, but you won't know until you actually compare the data with the origin.