Using lots of Custom Tags to facilitate code reuse? That’s great, except for the fact that Custom Tags have overhead that you may not need. Look through all your Custom Tags – if any of them format data, extract or manipulate values from other data, or anything like that, consider rewriting them as UDF’s (User Defined Functions). You’ll see dramatic performance gains by doing so. (Applies to: ColdFusion 5 (or later))

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