Use a string type that is appropriate. Like Text or ByteString. You have to be aware of the issue, but you usually don't have to do any extra work because there

Use a string type that is appropriate. Like Text or ByteString. You have to be aware of the issue, but you usually don't have to do any extra work because there are, for instance, already functions that load a large amount of text into an efficient representation. You just have to know to use them.