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If you are managing a large number of links, it is important to understand the recent history of status codes returned from each URI. Temporary 404s, 403s, 500s are quite common. So are DNS problems. The advice given by checklink to "Fix it Now" is sometimes wrong. It would be much better if the program could give advice like this: "This link has been consistently broken or unreliable for two weeks. Consider deleting it". It would be great if checklink could write to and read from a status code cache -- but the ability to specify machine-readable output (so checklink users can manage their own cache) would be very helpful.