W3C On DTD Perversions

According to the W3C Systeam’s blog, there’s a lot of poorly designed software out there. It’s pretty rare that something has a legitimate need to pull down a DTD in order to work. They should never be requesting it on a very frequent basis. It’s a very cachable asset. The post includes some pretty impressive stats too:

..up to 130 million requests per day, with periods of sustained bandwidth usage of 350Mbps, for resources that haven’t changed in years.

They also make a few requests which really all developers should follow. Here’s my summary:

  • Cache as much as possible, to minimize your impact on others (not to mention improve your performance).
  • Respect caching headers
  • Don’t fetch what you don’t need
  • Identify yourself. Don’t use a generic UA.
  • Try not to suck.

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